I agree with a lot of the feedback already given. Really a good game and concept. Refining the controls would make it even better. Not really sure if I missed something with the "keep pressing space to climb on ledges" part. Once I realized you could accel by shooting that got me through a few obstacles. Was a little frustrating not knowing which colors to conserve using them to climb and having to go back and recollect the correct ones.
Concept is cool, options menu is nice and adds some fit and finish to the game. Adding the sprite animation was a surprising option. Thanks for sharing this game!