Got 114 points, and I gotta say, that it's an ok game, but gets boring too quickly, and had no desire to continue playing it after three tries. I don't know... right now it feels like there's no penalty for shooting enemies with wrong coloured bullets, you just switch t the correct colour instead. What I would try to do is to let the player shoot as fast as he can click, but disable the weapon for a short time if he shoots the wrong colour.
Sorry if I come across as harsh, I tend to focus on negatives.