I like the blue environment much more than the other two (fresher mechanics, and more agreeable controls).
Nice game!

Neat, that's a lot of puzzles! The movement could have been faster in the non-iceworlds.

Woaaah, I spent a bit more than one hour on your game and didn't even finish it. The controls at first are a bit weird since almost each room has its physics but still the yellow/red controls are too slow in my opinion.

There is a WTF yellow level that i forgot to screen and a blue one that i really loved : http://imgur.com/rNQTA

That was a fun game to play ! I guess you might deserve the oscar of the longest game. Nice job on the level design (the blue levels were not well scaled as you progress in the game though). There are TONS of puzzles !

Great music and lovely graphics, really tidy presentation congratulations! The puzzles are brilliant and show much care and consideration. I can see why the controls are the way they are on red and yellow but perhaps when not in contact with a block a "free move" could operate like in the ice? (it was good enough for pacman...). The way the avatar recoils from objects is slightly annoying, perhaps a sound effect would have conveyed "you can't move here" better? Also on the hub screen if the avatar was positioned slightly lower one could just walk left or right to enter a blue/yellow, without colliding with the blocks. Minor quibble on a great entry!

Wow, this was a lot of fun. Great music, a nice visual aesthetic and really well-built puzzles that just kept on going. Great job!