Very cool concept and execution. I loved the interplay of the colour mechanics with the crate pushing and bouncers. Led to a lot of aha moments, which is exactly what you want from a puzzle game.
I experienced some framerate drop in some of the levels, which messed with timing a bit, but that might have just been me?
The puzzle design was fantastic, and I enjoyed the simple aesthetics as well. All around a solid game with fun gameplay. Well done!