Very creative idea! Simple, easy it to learn, hard to master. I really like the visuals and music choice. Makes me think of arcade machines.
At some point, the score just went up without my interaction. It would be cool to make it more competitive, maybe by placing the balls more carefully or having more penalty for touching the red ones (unless your aim was a more relaxing game).
My score was 135.
Cool game, good job with this submission!