This is a really neat take on the theme! I like the balancing between trying to keep as much paint as you can, but also needing to get rid of some of it as well.
I struggled a lot with level 3, I didn't catch on that the springs would shoot you higher if you had less paint, and then the springs flinging you into the door if you were too low was a bit rough. I love the idea of that level, I think it may need a little difficulty tweaking though!
Awesome job!