Yours look too "whole", I think. its hard to tell from still shot, but maybe you should make them not too round, make the borders more jaggy and such. It could distract the eye and make borders less obvious. Oh, and make them short, go more for series of short, dynamic anims instead of one long. Once the eye has traced the pattern, it becomes hard to mask borders.
Hehe, i dunno how murky it sounds to you.