This is a really cool concept! I feel like the current control layout could be a little more intuitive, and I could imagine this being a game that utilizes the mouse to quickly switch colors on your while with a click and drag or hotkey using mouse controls on the wheel. I fount it a bit difficult on the first example in changing colors to get a jump in, but this has a lot of potential with a matter of maybe finding controls that could be more accessible.
Great artwork and very cute!