Another fellow color puzzle :) Your game is really nice and clever, I think it would do great as a mobile game I don't know if you were planning on doing that. I have a question, what does it mean when all the color squares become black?
Squares become black when you reach the end of the round (marked "END" at the bottom) - at that point, you have to either restart or reverse your turns in order to actually finish the level and move on to the next one.
