That is really cool! I like your approach to hue, I made a function that calculates the color from HSV, but I have a feeling that your approach runs much more efficient
Nicely done, Work like the real game. You know the one from early 80's made out of wood and a metal ball. Ok now I feel old! :) Really you did a very good job and kept it simple.
you could add a color check for ball color, when the ball change it color so it dont match the board you are on. that be helpful my eye are not that great these days, add more levels what can i say it a good fun game you made, other then that it a good game you made and everything seem to work with your code and fast no hesitation of gameplay and user-friendly!