Very cool idea.
I miss the satisfying chaining effect that if you remove a color, and there are is the same colors with at least three bubbles around it that they also disappear as sort of a combo. But maybe that was not in doable in time I guess.
Not quite sure why, I always have the feeling that I have to click slightly before the beat, so it recognizes it as "on" beat. But as I got that off-beat thing, it was pretty well great. And the graphics were totally stylish. And the music fits it very well.