Concrete is a versatile material with a naturally neutral gray tone, the addition of concrete pigments can transform it into a spectrum of colors, offering endless design possibilities for both indoor and outdoor projects. Integral color is the method of adding color throughout the entire concrete mix, which provides a consistent hue from the surface to the core. For achieving a solid color, this process involves carefully measuring and blending concrete dyes into the wet concrete mixture, ensuring even distribution. Unlike surface treatments, integral color becomes a permanent part of the concrete, offering long-lasting beauty that won’t fade or peel over time, enhancing the aesthetic appeal of cement.
Unleash the Potential of Colored Concrete
Hey there, design enthusiasts! Ever walk past a stunning patio or a vibrant countertop and think, “Wow, that really pops!”? Chances are, you’ve stumbled upon the magic of colored concrete. It’s not your grandpa’s drab driveway anymore! Colored concrete is taking the design world by storm, injecting personality and pizzazz into everything from sleek modern interiors to cozy backyard retreats.
Think of concrete as a blank canvas – and colored concrete is where you get to play artist! Forget boring gray slabs; we’re talking about a kaleidoscope of options. Want a Tuscan-inspired terracotta patio? Done! A cool, contemporary blue kitchen island? Easy peasy! The aesthetic possibilities are truly endless, limited only by your imagination (and maybe your budget, but we’ll get to that later!). It offers an incredible level of design possibilities.
So, buckle up, because we’re diving headfirst into the wonderful world of colored concrete. In this guide, we’ll explore the essential materials, the must-have tools, the techniques that’ll make you a concrete coloring guru, the sneaky factors that can affect your final color, and how to troubleshoot common issues. By the end of this journey, you’ll be ready to unleash the potential of colored concrete in your own projects. Let’s get this party started!
Decoding the Palette: Essential Materials for Coloring Concrete
So, you’re ready to ditch the drab and dive headfirst into the vibrant world of colored concrete? Awesome! But hold your horses (or, you know, your wheelbarrows) because before you start mixing and pouring, you gotta get your hands on the right materials. Think of it like baking a cake; you can’t make a masterpiece with subpar ingredients, right? The quality and compatibility of your materials are key for a successful and stunning outcome. Let’s break down the essentials, shall we?
The Foundation: Choosing the Right Concrete Mix
Think of your concrete mix as the canvas for your artistic endeavors. If the canvas is wonky, your painting will be too! A high-quality concrete mix is the cornerstone of vibrant and durable colored concrete. Don’t skimp here; it’s worth investing in a good base to ensure your color pops and lasts.
Pigments: The Heart of the Color
Ah, pigments! This is where the magic truly happens. These little guys are the heart and soul of your colored concrete, bringing personality and pizzazz to your projects. There are several types to choose from, each with its own unique characteristics:
- Iron Oxide Pigments: Want to achieve those natural earth tones like warm browns, rustic reds, and sunny yellows? Iron oxide pigments are your best friend! These are derived from iron ore and are known for their durability and colorfastness.
- Chrome Oxide Pigments: Dreaming of lush green hues? Chrome oxide pigments will help you achieve that verdant vision. They’re particularly great for outdoor projects, as they’re highly resistant to fading.
- Cobalt Oxide Pigments: If you’re after cool and calming blue and purple shades, cobalt oxide pigments are the way to go. Keep in mind that these can be a bit pricier, but the stunning results are often worth the splurge.
- Synthetic Pigments: For those who crave enhanced UV resistance and a wider color range, synthetic pigments are a fantastic choice. They offer a rainbow of possibilities, allowing you to unleash your inner color guru.
Liquid Concrete Dyes: Deep Penetration Coloring
Want intense color that goes beyond the surface? Liquid concrete dyes are your secret weapon. These dyes work by penetrating the concrete surface, creating a rich, deep color that won’t easily chip or fade.
Dry Shake Hardeners: Surface Enhancement with Color
Looking for a way to boost both the color and durability of your concrete? Dry shake hardeners are your answer! These are applied to the surface of freshly poured concrete, creating a tough, abrasion-resistant layer while also adding a pop of color.
White Cement: A Canvas for Vibrant Colors
Ever wondered how to get those really bright, bold colors in concrete? The answer lies in white cement! Unlike traditional gray cement, which can dull colors, white cement provides a clean, neutral base, allowing your pigments to shine in all their glory.
Admixtures: Enhancing Performance and Color
Admixtures are like the sidekicks of the concrete world, working behind the scenes to improve both its performance and color. Let’s take a peek at a couple of key players:
- Acrylic Fortifiers/Admixtures: These nifty additions help to improve pigment dispersion, ensuring a uniform and vibrant color throughout the concrete. They also boost the overall strength and durability of your mix.
- Water Reducers/Superplasticizers: Want to make your concrete more workable without compromising the color? Water reducers are your solution! They improve workability without adding excess water, which can weaken the mix and dilute the color.
Sealers: The Final Touch for Protection and Enhancement
Last but not least, we have sealers – the unsung heroes of colored concrete. These guys are essential for preserving and enhancing the color, while also protecting your concrete from the elements. Here’s a rundown of some popular options:
- Acrylic Sealers: These are economical and easy to apply, making them a great choice for budget-conscious projects. They offer decent color enhancement and protection.
- Epoxy Sealers: Known for their durability and high-gloss finish, epoxy sealers are perfect for creating a sleek, modern look. They’re particularly well-suited for indoor applications.
- Polyurethane Sealers: If you need superior abrasion and UV resistance, polyurethane sealers are the way to go. They’re a bit pricier than acrylic sealers, but they offer excellent long-term protection, especially for outdoor projects.
- Penetrating Sealers: Want to maintain the natural look of your concrete while still providing protection? Penetrating sealers are your answer! They soak into the concrete, creating a barrier against water and stains without altering the surface appearance.
Equipping Your Arsenal: Essential Tools for Coloring Concrete
Alright, so you’ve got your pigments picked out, your white cement gleaming, and maybe even some fancy admixtures bubbling in anticipation. But hold on there, Picasso of pavements! Before you start slinging concrete like Jackson Pollock on a mission, let’s talk tools. You wouldn’t try to paint the Mona Lisa with a toothbrush, would you? (Okay, maybe some very avant-garde folks would, but let’s stick to best practices here).
This section is all about making sure you’re not only equipped to get the job done, but to get it done right…and safely. Think of it as gathering your Infinity Stones, but instead of snapping half the universe away, you’re creating a stunningly colored concrete masterpiece.
Mixing Tools: Achieving Uniform Color Distribution
Ever tried making chocolate chip cookies and forgot to mix the chocolate chips evenly? Yeah, nobody wants a cookie that’s all chocolate in one bite and plain dough in the next. Same goes for concrete coloring. Uniform color is key, and that starts with the right mixing tool.
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Concrete Mixer: If you’re tackling a large-scale project – think driveway, patio, or a really ambitious garden gnome collection – a concrete mixer is your best friend. These bad boys ensure consistent mixing and save you from a serious case of shovel-induced arm fatigue.
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Mixing Tub/Wheelbarrow: For smaller batches – stepping stones, small planters, or a single, super-stylish birdbath – a mixing tub or wheelbarrow is perfect. Just make sure it’s clean, sturdy, and big enough to handle the amount of concrete you’re working with.
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Shovels/Hoes: Ah, the old-school method! If you’re feeling particularly rugged or just enjoy a good workout, shovels and hoes can do the trick. Just be prepared to put in some elbow grease to ensure that pigment is thoroughly mixed in. Consider this your concrete-coloring cardio.
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Drill with Mixing Paddle: This is the sweet spot between hand-mixing and a full-blown concrete mixer. A drill with a mixing paddle is great for small to medium-sized batches, and it’s a lot less tiring than wielding a shovel. Just be sure to use a heavy-duty drill and a paddle designed for concrete to avoid burning out the motor.
Measuring Tools: Precision for Consistent Results
Remember that time you tried to bake a cake without measuring the ingredients? Yeah, probably didn’t end well. With concrete coloring, accuracy is your superpower. We need precise measurements, especially when it comes to pigment load and water ratios. You need to make sure your concrete matches the color swatch you selected.
Personal Protective Equipment (PPE): Safety First
Okay, let’s get serious for a moment. Concrete and pigments can be harsh on your skin, lungs, and eyes. PPE isn’t just some annoying afterthought; it’s what keeps you safe and sound while you’re creating your concrete masterpiece.
- Gloves: Protect your skin from irritation caused by concrete and pigments. Trust us, you don’t want to spend the next week itching like crazy.
- Dust Mask/Respirator: Inhaling pigment dust is a one-way ticket to respiratory irritation. A dust mask or, even better, a respirator is essential for protecting your lungs.
- Eye Protection: Concrete splashes and pigment dust can do serious damage to your eyes. Safety glasses or goggles are non-negotiable.
Pouring and Finishing Tools: Achieving the Desired Texture
Now that you’ve mixed your perfectly colored concrete, it’s time to bring it to life! The right pouring and finishing tools will help you achieve the desired look and feel, whether it’s a smooth, polished surface or a textured, rustic finish.
- Trowels: Trowels are your go-to tool for achieving a smooth, polished finish. They come in various sizes and shapes, so choose the ones that feel most comfortable in your hand.
- Floats: Floats are used to level the concrete surface and bring paste to the top, making it easier to achieve a smooth finish with a trowel.
- Edgers: Edgers are used to create clean, defined edges on concrete slabs, giving your project a professional look.
- Screeds: Screeds are used to level large surface areas of concrete, ensuring a consistent thickness and a smooth, even surface.
Cleaning Supplies: Maintaining a Clean Workspace
Finally, let’s talk about keeping your workspace clean. A tidy workspace is a safe workspace, and it also helps prevent contamination of your concrete mix. Keep these essentials on hand:
- Buckets of clean water
- Sponges and cloths
- Concrete cleaner (for removing stubborn stains)
- Broom and dustpan
There you have it! With the right tools in hand, you’re ready to tackle your concrete coloring project with confidence.
Mastering the Techniques: Coloring Processes for Stunning Results
Alright, buckle up, color enthusiasts! Now that we’ve got our materials and tools sorted, it’s time to dive into the fun part: actually coloring the concrete! This section is all about the different methods you can use to transform your gray slab into a vibrant masterpiece. Each technique has its own unique charm and application, so let’s explore them and figure out which one is your perfect match.
Integral Coloring: Mixing Color from Within
Imagine baking a cake and swirling the color right into the batter – that’s essentially what integral coloring is! With this method, you add the pigment directly into the concrete mix before it’s poured. This ensures the color is consistent throughout the entire slab, so even if the surface gets chipped or worn down, the color remains true. Think of it as coloring the concrete’s soul!
- The Process: Measure your pigment carefully (consistency is key!). Add the pigment to the concrete mix during the mixing phase. Ensure it’s evenly distributed.
- Best Practices: Use a high-quality mixer to guarantee even color distribution. Adjust the pigment load based on the desired color intensity, always err on the side of caution and test a small batch first!
Surface Coloring: Adding Depth and Texture Post-Pour
Think of this method as applying makeup to your concrete – you’re enhancing its natural beauty after it’s already set! Surface coloring involves applying color to the concrete surface after it’s been poured and has begun to cure. This method offers incredible versatility and allows you to create some stunning effects, from subtle washes of color to bold, eye-catching designs.
- Techniques: Stains penetrate the concrete surface for a permanent color change. Dyes offer vibrant, translucent colors but may not be as UV resistant.
- Process: Ensure the concrete surface is clean and properly prepped. Apply the stain or dye according to the manufacturer’s instructions.
- Best Practices: Consider acid staining if you are looking for a unique and mottled look. Seal the surface afterward to protect the color and enhance durability.
Color Matching: Achieving the Perfect Shade
Ever tried to match a paint color to a fabric swatch? It can be tricky! Color matching in concrete is similar – you need to nail the exact shade you’re aiming for. This involves careful measuring, testing, and adjusting to achieve the desired hue.
- Tips and Techniques: Start with a small test batch and adjust the pigment load until you achieve the desired color. Keep detailed records of your mix design so you can replicate it consistently. If you’re having trouble achieving a specific color, consult with a concrete supply specialist.
- Tools: Take advantage of color charts from pigment manufacturers, and use colorimeters (color scanners) for precise matching.
Batching: Ensuring Color Consistency
Imagine baking a batch of cookies, but each one comes out a different color – that’s what inconsistent batching can do to your concrete! Batching refers to the process of mixing concrete in consistent quantities. To ensure your color is uniform across different pours, you need to follow consistent batching practices.
- Importance: Consistent batching is key to maintaining uniform color across different pours.
- Best Practices: Use accurate measuring tools. Mix each batch for the same amount of time. Use the same concrete mix and pigment from the same manufacturer for each batch.
Curing: Nurturing Color Development
Curing is the process of maintaining proper moisture levels and temperature in concrete after it’s been poured. Think of it as giving your colored concrete a spa day! Proper curing is essential for optimal color development and strength. If the concrete dries out too quickly, the color can become uneven or faded.
- Why: Proper curing is essential for optimal color development and strength.
- How: Keep the concrete moist by covering it with plastic sheeting, spraying it with water regularly, or using a curing compound. Avoid extreme temperature fluctuations during the curing process.
Sealing: Protecting Your Colored Concrete Investment
Applying a sealer is like giving your concrete a protective shield against the elements! A sealer not only protects the surface from stains and damage but also enhances the color and gives it a beautiful sheen.
- The Process: Ensure the concrete is clean and dry before applying the sealer. Apply the sealer evenly, following the manufacturer’s instructions.
- Considerations: Choose a sealer that is compatible with the type of coloring method you used. Acrylic sealers enhance color and provide a glossy finish. Penetrating sealers offer protection without altering the appearance of the concrete.
Testing: Verifying Results Before Full Application
Before you commit to coloring your entire project, it’s always a good idea to test the coloring method on a small, inconspicuous area. This will allow you to see how the color looks and make any necessary adjustments before you go all in.
- Why Test: Avoid costly mistakes by testing the coloring method first.
- How: Choose a small, inconspicuous area (like a corner or under a cabinet) to test the coloring method. Allow the test area to fully cure and dry before evaluating the results.
Cracking the Code: Factors Influencing Concrete Color
Ever wonder why that perfect shade of concrete you envisioned looks a little… off? Coloring concrete isn’t just about tossing in some pigment and hoping for the best. It’s a bit of a science, a dash of art, and a whole lot of understanding what makes concrete tick. Let’s break down the key culprits that can make or break your colored concrete dreams.
Cement Type: Gray vs. White
Think of your cement as the canvas. Gray cement is like painting on a tinted canvas—it’ll subtly shift the colors you apply. If you’re after rich, earthy tones, gray cement can work wonders. But if you want vibrant, true-to-life hues, white cement is your best friend. It provides a blank slate for your pigments to really shine. So, choosing between gray and white cement is your starting point, influencing the vibrancy of your final color.
Aggregate Color: The Subtleties Beneath
Aggregates—those little rocks and sand bits mixed in—play a sneaky role. Darker aggregates can subtly darken the overall color, while lighter ones can brighten it. It’s like adding a filter to your photo; the underlying colors always peek through. Consider the aggregate color when planning your project to make sure it complements, not competes with, your chosen pigment.
Water Content: Balancing Strength and Hue
Water is a must for workable concrete but too much or too little can throw things off. Too much water can dilute the pigment, leading to a weaker, washed-out color. Too little, and the pigment might not distribute evenly. Aim for the sweet spot—a mix that’s workable but not overly wet. Also, too much can cause a myriad of issues with the concrete’s curing and overall durability.
Mixing Time: Ensuring Uniformity
Imagine stirring a cup of coffee with creamer for only 5 seconds—you’ll get streaks, not a uniform blend. Same with concrete! Proper mixing time ensures the pigment is evenly distributed throughout the entire batch. Skimp on the mixing, and you’ll end up with inconsistent color patches, making your project look a bit like a tie-dye experiment gone wrong.
Curing Conditions: The Climate’s Role
Curing—keeping the concrete moist and at the right temperature—is crucial for color development and strength. Extreme temperatures or fluctuating humidity levels can lead to uneven color development or even discoloration. Think of it as baking a cake; you need a stable oven temperature for the perfect rise and color! The ideal environment for curing is as follows:
- 70 degrees Fahrenheit for 7 days
- or 50 degrees Fahrenheit for 14 days
UV Exposure: Sunlight’s Fade Factor
Sunlight, the ultimate fade machine! Prolonged UV exposure can cause certain pigments to break down, leading to fading and discoloration over time. Some pigments are more UV-resistant than others, so choose wisely for outdoor projects. A UV-resistant sealer can also provide an extra layer of protection.
Sealer Type: Enhancing or Altering Color
Sealers aren’t just for protection; they can also affect the color’s final look. Some sealers enhance the color, making it pop, while others might slightly alter it. Experiment on a small, inconspicuous area first to see how the sealer interacts with your chosen color. A good sealer will protect from weather, stains, and abrasion, thus extending the lifespan of the color.
Pigment Load: Achieving the Right Saturation
Pigment load refers to the amount of pigment you add to the mix. Too little, and the color will be weak and pale. Too much, and you risk compromising the concrete’s strength. Finding the right balance is key. Always follow the pigment manufacturer’s recommendations and test a small batch first to ensure you achieve the desired intensity.
Troubleshooting: Taming the Rainbow – Addressing Common Concrete Color Calamities
Alright, so you’ve poured your heart (and a whole lot of concrete) into a project, aiming for that perfect shade of earthy red or cool, calm blue. But sometimes, things go a little sideways, right? Color variation, powdery white stuff, and fading… it’s enough to make you want to throw your trowel in the towel. Don’t sweat it! Every artist (and yes, you’re an artist now!) faces challenges. Let’s troubleshoot these common color conundrums and get your concrete looking fabulous.
Color Variation: Maintaining Consistency – The Bane of Our Existence
Ah, color variation, the gremlin that loves to mess with our meticulously planned projects. You nail the color on one pour, only to find the next batch is a slightly different shade. What gives? Here’s the lowdown on keeping things consistent:
- Batch Like a Boss: Stick to the same pigment load, concrete mix, and water ratio for every single batch. Think of it as baking a cake – you wouldn’t randomly change the ingredients halfway through, would you?
- Mix it Up (Properly): Ensure your concrete is mixed thoroughly. Pigments need to be evenly distributed, so don’t skimp on the mixing time. Give that mixer a good workout!
- Source Consistency: Use materials from the same supplier and batch numbers where possible. Slight variations between suppliers can lead to color differences.
- Test, Test, Test: Before committing to a large pour, always test your mix in a small, inconspicuous area. This lets you catch any color discrepancies early on.
- Weather Watch: Be aware that environmental conditions like sun exposure and temperature during curing can affect color. Try to control these as much as possible, perhaps by shading freshly poured concrete.
Efflorescence: Understanding and Treating Powdery Deposits – The Ghostly Guest
Efflorescence: that charming (not!) white, powdery deposit that sometimes appears on concrete surfaces. It’s caused by soluble salts rising to the surface and reacting with air. While it doesn’t usually affect the structural integrity of your concrete, it can be unsightly. Here’s how to handle it:
- Prevention is Key: Use a low-alkali cement and ensure proper drainage to minimize water penetration. This reduces the amount of salt that can leach out.
- Seal It Up: Apply a breathable sealer to help prevent water from entering the concrete in the first place.
- Brush It Off: For mild cases, a stiff brush and some water might do the trick.
- Acid Wash (Handle with Care): For stubborn efflorescence, a diluted muriatic acid solution can be used. Always follow safety precautions (gloves, eye protection, ventilation) and test a small area first. Make sure to rinse thoroughly!
Fading: Preserving the Vibrancy – Holding Back the Sun
Fading is the arch-nemesis of colored concrete. UV rays can break down pigments over time, leaving your vibrant hues looking dull and lifeless. But fear not, you can fight back:
- Choose UV-Resistant Pigments: Opt for synthetic pigments known for their superior UV resistance. Iron oxides are a good choice for earth tones.
- Sealer to the Rescue: A UV-resistant sealer acts as a protective shield against the sun’s harmful rays. Reapply the sealer periodically as needed.
- Consider Shading: If possible, provide shade for your colored concrete, especially during the hottest parts of the day. Think trees, awnings, or strategically placed umbrellas.
- Regular Cleaning: Keeping your concrete clean can help prevent fading. Dirt and grime can accelerate the breakdown of pigments.
By tackling these common color issues head-on, you’ll be well on your way to creating stunning, long-lasting colored concrete projects. Remember, a little troubleshooting can go a long way in achieving concrete perfection!
Planning Your Project: Key Considerations Before You Start
Okay, so you’re itching to dive headfirst into the colorful world of concrete, eh? Awesome! But before you start picturing your technicolor dream patio, let’s pump the brakes for a sec. Planning is key, my friend. Think of it like prepping your canvas before unleashing your inner Picasso. Rushing in without a game plan is like trying to bake a cake without a recipe—you might end up with something edible, but chances are, it’ll be a hot mess.
Project Type: Tailoring the Approach
First things first, what exactly are you coloring? A sprawling driveway? A set of quirky garden gnomes? The project type is a HUGE deal. A small decorative project will need a completely different coloring process than a large project like a patio. The coloring method you choose for something small like concrete garden edging, a statue, or countertops will be completely different. Are you stamping the concrete for a decorative pattern, or leaving it as is? The scale and purpose will influence everything from the type of pigment you need to the tools you’ll be wielding. Think of it like choosing the right paintbrush – a tiny detail brush won’t cut it for a mural, and a giant roller isn’t ideal for fine lines.
Desired Aesthetic: Achieving the Vision
Next, close your eyes and really picture what you want. Are you dreaming of a sun-baked Tuscan courtyard? A sleek, modern gray patio? Or maybe a playful, rainbow-bright walkway? Really thinking about the end result will save you a TON of headaches down the road. Scour Pinterest, gather inspiration from magazines, and maybe even create a mood board. The clearer your vision, the easier it will be to select the right colors, textures, and techniques to bring it to life.
Budget: Balancing Cost and Quality
Alright, let’s talk brass tacks: money. Concrete coloring can be surprisingly affordable, but costs can quickly add up depending on the size of your project, the type of pigments you choose, and whether you’re hiring a pro or DIY-ing it. Don’t skimp on quality, though. Remember, you usually get what you pay for. Opting for cheap pigments might save you a few bucks upfront, but they could fade faster or not give you the vibrant color you’re after. It’s a balancing act, but with a little planning, you can create something stunning without breaking the bank. Consider the long-term value and durability of your chosen materials – a little extra investment now can save you a lot of headaches (and money!) in the future.
How does the addition of color affect the structural integrity of concrete?
Cement hydration influences concrete strength development significantly. Admixtures such as coloring agents can modify hydration process characteristics. Pigments introduce variations, influencing the concrete’s setting time. Oxides, commonly used for coloring, generally do not compromise structural integrity. Dosage requires careful control because excessive amounts might reduce concrete strength. Testing is crucial to verify that colored concrete meets the required standards. Standards ensure the colored concrete is structurally sound.
What chemical reactions occur when adding coloring agents to concrete?
Cement includes tricalcium silicate and dicalcium silicate that hydrates when mixed with water. Hydration forms calcium silicate hydrate (CSH) that provides concrete strength. Pigments, when added, remain chemically inert. Inertness prevents disruption of hydration, ensuring the concrete hardens properly. Oxides such as iron oxide or chromium oxide, do not react with cement compounds. Reactions can occur if improper additives are used, thus affecting color stability. Stability in color ensures long-term aesthetic appeal.
How does the particle size of coloring agents influence the final appearance of colored concrete?
Pigment particle size affects the color dispersion in concrete. Dispersion influences the uniformity of the concrete’s final color. Fine particles provide even color distribution. Distribution ensures a consistent appearance across the concrete surface. Coarse particles may lead to inconsistent coloring, creating spots. Spots reduce aesthetic value, impacting the overall look. Appearance therefore depends heavily on using appropriately sized particles.
What types of pigments are most resistant to fading from UV exposure in concrete?
Concrete is often exposed to sunlight that can degrade pigments. Pigments vary in their resistance to ultraviolet (UV) radiation. Oxides, specifically iron oxides, demonstrate high UV resistance. Resistance helps maintain the color’s integrity over time. Organic pigments tend to fade quicker when exposed to sunlight. Fading reduces vibrancy, changing the aesthetic quality. Quality in colored concrete is maintained with UV-resistant pigments.
So, there you have it! Adding color to concrete is a fun way to customize your projects and bring your vision to life. Don’t be afraid to experiment with different pigments and techniques to achieve the perfect shade. Happy mixing, and we can’t wait to see what you create!