This, but dark brown instead, as more universal color. Buy in bulk 20 pairs (I use http://www.blacksocks.com/ http://www.blacksocks.com/ since they seem to keep

This, but dark brown instead, as more universal color. Buy in bulk 20 pairs (I use http://www.blacksocks.com/ http://www.blacksocks.com/ since they seem to keep same model in stock, other producers seem to rename their socks - never can find the same socks later). Once they show signs of too much wear, order new batch and throw all old ones away. Of course I also own few other colors for special occasions and sport socks, they go to separate drawer.