Very original! I never played a game like this one before. The player's options for motion are versatile, allowing for almost instant attacks at any enemy, while being able to do evasive maneuvers just in time. Changing colors for protection is very helpful too.
Suggestion: in the start of the game, there are a lot of information to take in, which is hard for some players (such as myself) to absorb all at once. It would be advisable to give bits of information to the player and consider a level design to engage the player during the learning process of the game's rules.
Nice job!