Cool game, it has some Potensh :)
The mechanics (and the color choice) reminds me of Porttal 2, which is nice !
The controls could be improved, two things for instance:
- You've kept friction on platform edges
- The gun sometimes don't apply color where you shoot, it would have been easier to just kept pressing the fire button and having the color spread around (although it is a lot harder to code give you that)
Great job :)