Due to the different monitor and light effect, the actual color of the item might be slightly different from. Tested. Save. Some are thick, some are thin, and they come in many colors. 172 17. I don't think you can paint the foam b/c it will lose it's absorption characteristics. Use the foam wedge brushes for hard to reach spots. You can use a stencil or cookie cutter to draw your pattern onto a sheet of foam before you paint it. Please consider making a contribution to wikiHow today. Spray Paint: If you have a choice, use spray paint over brush-applied paint. Maybe give it a primer coat first of the areas that you want to paint. A paint roller that's 9 in (23 cm) will cost around $7 (£4.95) at a hardware store. mtnbiker326; 1 Quote; Link to post Share on other sites. Epoxy hardly stick to either one of these materials. Follow the directions on the paint container for dry times between coats. We noticed this too! Feb 2007. We use cookies to make wikiHow great. My Studio. Make sure to use light sandpaper to keep the paint’s good quality. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/61\/Paint-Foam-Step-1.jpg\/v4-460px-Paint-Foam-Step-1.jpg","bigUrl":"\/images\/thumb\/6\/61\/Paint-Foam-Step-1.jpg\/aid9913935-v4-728px-Paint-Foam-Step-1.jpg","smallWidth":460,"smallHeight":306,"bigWidth":728,"bigHeight":485,"licensing":"