Really great foundation would love to see it expanded to maybe into a music game where you gotta keep matching but the speed of the bricks coming at you matches the beat of the music.  Great work! Keep it up! 

Love the concept, very clean art syle, one issue I found is that if you get to the correct color last second, the score will go up but the game will still restart.

Loved the little squish animation that plays when you hit the edge of the border! And as a whole a very clean look.

You could probably mix it up by speeding up the blocks over time (I'm not sure if you did this) or just changing the color faster, or add coins and stuff, kind of like how Jetpack Joyride does.