Nice! I can tell you all put some effort into this! Great work! My biggest gripe is probably the collisions. Too often I got stuck in walls. I like the idea of switching the colors around to get to certain areas, although I wish I could just collect and keep colors instead of starting each new level with no colors. I got to the little room where there are a ton of suits of armor guys but Idk how you are supposed to beat them!? One suggestion I would say is to use knockback when I hit an enemy. As it is now, I can hit them with my paintbrush but they are still in full charge towards me!
Overall keep it up! The most fun I had was the level with red, blue, yellow, green and purple. The reason being I just tried to run as fast from one end to the other without stopping while changing colors as I got close to the bricks! haha. Great work though! :D