I look up some stuff on Google for you, found this:
http://space-wolves-grey.blogspot.com/2011_01_01_archive.html
I like the muted grey color.
You could make your blood claws (if you take any) with Axes and Pikes
Termis with Rounded shields (viking of course) for storm sheilds
Everyone gets furs on them and a cape/cloak.
You can paint them however you want, paint them black with grey, white with grey, or even snow camo.
I read this and got some inspiration for my
SWs:
http://warhammer40k.wikia.com/wiki/Space_Wolves
Good Luck and post some pics of what you decide!