Lovely :)
Enjoyed the levels and although the control were a bit janky at times, after a level or two, they came to me somewhat naturally. The music added a nice calm feeling to it and the visuals do their job.
What I was wishing for, while palying the game was a next level button, so I don't have to always remember which level I was on. I also think that the coloured blocks could've been implemented earlier, since the later half of the first five levels started to feel a bit boring and repetitive.
But overall, good game.