Great style choice and fun idea with the separate collision layers. My favourite was the level with the platform that moves up and down, requiring you to time each color at a separate time. The physics were a little weird sometimes though. I even send a cube flying at light speed somehow... At a certain time, I didn't have any red guys left so I had to either fully restart, or keep playing without that color, which was a bit of a harsh punishment for failing an early level. I really liked the game though, and gotta say, top-notch voice acting!