It works. For a long time, the best strategy is pure red ball, until you can get straight to the white ball, then it's pure white ball for some time - don't upgrade any of the other balls. Until you add the next-best ball. The anti-bounce upgrade I think is mostly there to reduce the number of balls on the screen, it makes it less visually cool though and reduces the bounciness multiplier. It would be nice to be able to see how many diamonds you get.