I like the cute character and the game concept - got stuck at one point, but enjoyed solving the levels till that point. Good work!
Have you thought about coloring the character itself in the currently picked color? I think this would be a nice change, as the information then would be where the players attention is.
In our game fireflies got infested and lost their colors. You can help them to get it back. Would be happy to hear your feedback on that, as we had similar ideas.