The aesthetic and sound design are both great. The first two (pink and green puzzles) were fun. The blue and black ones kinda just felt tacked on, which I'm assuming is more to do with time constraints than anything. My biggest problems, as most have stated, is that the control scheme is totally unintuitive. Even after getting the hang of it for movement, when using it for precision puzzles like the green one, I was constantly making mistakes.
I think it would also be helpful to provide an indicator as to what color the player should be using in an area, or at least make the color transition snappier. As it stands, it feels like a chore to switch through all of them to figure out what you should do.
Overall, cool game. I think you main issue you've got to get sorted is the controls.