Nice game, but i think there are some things that could be different:
- the square is too slow, it feels like it takes more time to go from left to right than the bar to come from the top to the bottom, so you are forced to cycle colors even if the color is on the other side of the bar
- would be nice to see what is the next or some of the next colors on the cycle, like on tetris that shows the next piece
- some colors are very similar, I'm not colorblind, but i went more than once to the wrong color
Cheers!