apparently there is a blue and a purple? I am colorblind, but I can still tell most of the colors apart. If I can't tell your blue and purple apart, then your colors are too similar. Please fix
Initially, this game is really fun. Then, after the first two or three run-throughs, you notice that your "levels" don't actually mean anything.
I personally respond positively to being rewarded when I do successful things, so the lack of a reward system is extremely disappointing to me. I think that Sigmund Freud would agree.
The randomness, combined with the lack of any form of reward for success, makes this game tiresome and annoying.