Very minor bug, just the colour wheel is inverted in the menu. (Want to play as green? Choose purple as an example.)
You can just press C again when the game starts, there you can change the color and it will actually work.
I’ve had games, in 0.1.0.1, where the colour wheel hasn’t worked at all after the first time setup.
I’ve noticed the same problem after the initial selection - I chose blue, and the ball stayed a whitish colour.