Thank you very much! I'll investigate the flipper bug.
Also on mobile I wanted to force landscape and fullscreen when Wave1 starts; if it didn't, well, that's another mobile bug to look into. But game looks good portrait, so I might just give you the option to play it however you want it.
About the color change, that's intentional. You have to hit the ball with a bit of force to own it. If you just touch it or stop it, it won't become yours.