Cute graphics! The gameplay loop is also really interesting and clever. I particularly liked the colours slowly fading away until you only had two left. The dashing across colours you can't turn into was very cool, with those (preturnaturally fast) birds diving at you.
Liked the graphics, liked the music, liked the gameplay. The only thing that I would have liked to see is keyboard controls for the menus so I didn't have to move my hand over to the mouse every time I cleared a level.
Anyway, overall a fantastic game. Well done!