I have been wanting to make some of these for a while and am so glad I finally got around to it. I chose three main colors and used white to draw/paint the shapes. I left some of the sides blank, mostly because I couldn't think of anything else to paint. But I like it! He hasn't quite got the hang of it, but he loves the colors and he loves stacking them up and then letting me do the matching for him. Typical man, right?