I'd visited this thread and others in a longstanding quest for the same. I was looking for something really nice and thick (for my bony feet), over-the-calf length, that also would come in something other than plain conservative solids. Finally had a eureka moment and went looking for ski socks:
http://www.sierratradingpost.com/lorpen-ski-snowboard-socks-italian-wool-2-pack-for-men-and-women~p~2355n/
Got the socks today and love them. Lorpen's M fits my (skinny) size 10 feet great, they're thick, and if all of their socks didn't appear to be sold out across the web, you could find them in everything from argyle to houndstooth (and camo?).
Also found these today and decided to try a set because why not, they're dirt cheap:
http://www.ebay.co.uk/itm/3-PAIR-MENS-THICK-THERMAL-ARGYLE-SOCKS-SIZE-6-11-ASS-COLOURS-PK-3-THERMAL-ARGYLE-/130802234942?ssPageName=ADME:L:OC:US:3160