This is my favorite application of the theme I've seen so far. Such a unique and creative mechanic, combining the colors to be able to safely pass through obstacles. I'm a huge fan of this idea! Beyond that, the artwork is just so darn charming. I love it.
I really hope you keep working on this post-jam. I'd love to see this mechanic explored in more depth. I could see a leaderboard being really fun with this game.
All in all you've done phenomenal work here. Nice job!