As xeno said, you should spend more time on it. All skins benefit from patience and attention to detail. Whatever you do, just don't spend as much time on it as xeno does on his skins!!!
the rightmost stack has got a bug too (half of the the big circle disappears)
When you press a PL stack, it looks a bit rough the way the khaki background jumps onto the grey background of the pledit.txt area. You might consider keeping the grey background grey for that upper section of the stacks. The yellow dots would of course be too hard to see on a grey background, so you could make the dots in those areas red or something.
I agree that the volume looks good. I think the EQ would look cool if the circles all moved around a little bit as you slid the animation. (a subtle variation of this might further improve the volume, too)