Interesting game. The idea of different paints affecting your abilities is nice. Your game needs more polish though and play testing. But it certainty shows a lot of promise.

There are definite question marks on on your collision detection - There were parts where I got stuck on a column of blocks and on the first floating pink platform there is a spot on the left where the player doesn't automatically jump.

When you die, starting the whole game again, rather than from a checkpoint must be addressed too.

I hope you do take this further. It shows promise.

Absolutely terrible music though :)

this idea-
IS AWESOME
like @phil said it needs polish, and checkpoints
it has so much promise
very cool! nice idea!

woa this is so cool i love coloring and also fnaf

Really love it! I think it would be cool to have some puzzles where you have to press a button to release paint from a spout and change the level, a la Portal 2.

Since you only ever have one object moving, it shouldn't be too hard to employ 'a priori' collision detection. In other words, detecting collisions before they happen. You can use this to create some rock solid physics. Krystman demonstrates this in a Breakout clone in this video: https://youtu.be/fBi6vPcFmJ4 . You can just set the dx and dy values to 0 instead of reflecting them.

Anyway, I think your game has some real potential and I had a lot of fun playing it. Good luck with finishing it or whatever else you decide to do next!