Of late I have found colouring of components of increasing importance to my purchasing decisions and what I really hate is multicolouredness, thats why I can't stand Gigabyte mobos at the moment, those guys seem to make every header some weird color and the things look like a shelf of random paint cans fell on them. Obviously, vid cards don't have a plethora of plugs over them. The obvious thing on video cards thats a different colour to the PCB is the cooler, and I love the look of the bare PCB with lots of components sticking out, therefore I hate the big ugly slab sided full length coolers that come on most high end cards these days and prefer the looks of the copper types from Zalman etc and would probably get one if I was buying a card, therefore for me, what looks good with a big copper cooler on it? I reckon green looks crap, and red too. Blue is OK, black is good but i'm over black. There seems to be a big concensus that white is good, so i'm all for white too, or yellow, just because bright yellow is right in your face and I'm all for that.
Another thing, with the way most computers are these days, tower case, ATX, all that, most people never see the front of the graphics card anyway! usually you are looking down on the back of the card's PCB which is frickin bare and ugly, andyou don't see the other side where all the good sh*t is cause another card is in the way. Obviously because of how ATX works all the componentry is on that side, but 90-something percent of all graphics cards will be mounted in the first expansion slot and never have anything backing up against them except maybe oversized north bridge coolers, so I reckon ot would be sweet to have componentry on that side, maybe mount the memory chips there and they could have another fan of their own or be cooled by the CPU fan. I suppose that would be rather expensive to manufacture, but just a thought.