Thanks for the feedback guys :), I fixed the timing and repixelled the square looking frames. I've AA'd for the white background heavily to make the roundness at that size, can't know what BG people are using either so I'll keep the white, for now... haha :)

It sometimes seems a rectangle muving up and down. Try without BG.

there might be one too many frames at the bottom - it looks a little like the ball is jumping to me, rather than bouncing.

that being said, the AA is amazing. 6 colors including black and white? that's crazy.