Thx Sharp and UD, funny that you'd mention that Whitesock because I actually made two attempt to do just that but booth times I failed and it looked very weird!
Well what I do for atmospheric things like this is I work with colors and then at the end I throw some flat gradients over it and reduce the opacity so that I get the colors to make it pop, but yet still have that unifying gradient to create that frosty/underwater atmosphere.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.