I like the coloring and the overall feel of it. However I'm not a fan of how you don't have any smooth parts to the effects, the bubble C4Ds are well placed and everything, you just made them look so spattered out. I just don't like how that looks where the bubbles should be round. Other than that you have a nice focal, good placement, and alright lighting. Overall it's a good sig. I prefer the colored version.
It's the colors which don't flow. Fix the colors up and it will easily beat the non-colored version. Non-Colored sigs are like whats the point? its for eye pleasure not placement. Overall good signature just the coloring kinda makes it seem to messy and over done.