I owned my Q701 for two years and a few months, the white with black accents were as storm-trooper as the day I got them. Of course, I only used them in the house so I never got mud or grease on them or something, but there was no discoloration at all from my hands or laying face-up with them in bed, many-hour marathons of gaming sessions. Unless you work as a mechanic or try to microwave your headphones, they will stay clean with normal home use.
I actually feel the white with black are the best looking AKG's (besides the mocha lower end ones, those look pretty cool!). Aesthetics are mostly quite up to personal opinion, BUT from a design-principles and color theory point of view, white is a very "clean" and "pure" color, the repetition of the two black rings is a regular expected thing for the mind to process and it is more balanced than the single thin orange ring on a K712, black and white are complimentary opposites without being garish, and overall they have a mathematical symmetry and repetition that is stimulating for the brain. I'm surprised that the white isn't the most expensive Q701.
Edited by Evshrug - 11/26/14 at 7:56pm