I really like the concept of the game, the idea of being careful which colors you can touch so that you blend into the environment is really cool!
However, it was a bit difficult for me to understand both how to change colors and when being a certain color was ok or not. (Sometimes I would change color while touching the background with a different color, but other times I would touch a dot in the level and then touching the background would get me caught)
I think that combining this idea with some of the mechanics of the game "Empty", where after you switch to a different color, the background also changes to that color, so you have limited transitions, would make for an awesome puzzle game, if you are interested in working on it further.
Either way, great job on the game!