This was a lot of fun! Tons of options which is great! I wish more games let you customize the actual LOOK of the game and not just inputs. Well done! It was pretty challenging honestly! I kept getting confused between the different keys and what colors they were in the heat of the moment. haha. My only suggestion might be to maybe stick with 2 colors and 1 button. I think doing that could really enhance the experience and not bog the player down with trying to remember to jump and color change while avoiding lazers and hitting speed boosts.
Overall great work! Your glow shader looks good! :D