Like the title says
and yes, all the colors displayed have been the color of at least one motherboard.
The first 2 options are the more traditional colors. Asus and Epox are the repective examples of these ones.
my vote goes for silver 
because its looks very cool! almost sexy! lol
I’d say red, but I think I may like a white one more if I actually saw one.
Hmmm a silver motherboard :o
where??
lemme c a pic then I vote 
EDIT:
w00t Now I c that there is gold 2 !!!
any1 has pic of it 
Soltek’s nForce 2 motherboard is a gold color, but it’s a limited run.
Soyo makes Platinum versions of their Dragon motherboards.
I’ve seen a couple limited edition Abit boards that were white too.
lol http://www.soltek.com.tw/moboimage/75frn-g.jpg
thats one ugly board 
http://www.soltek.com.tw/moboimage/85mr3dr3.jpg supposed to be silver but it looks more verry light brown to me :blah:
I have a soltek purple ray which looks pretty good although it’S darker than what you’d see on their site
soyo’s platinum boards look great to me !
my vote goes for black, dont know why really i just think all the coloured ones look a bit cheap.