Kentwool, which makes some of the best socks I’ve ever used, now makes a terrific line of “Game Day Socks.” Not tied to any particular team — and thus neatly avoiding licensing fees — the socks are available in a variety of generic colors. The one above, for example is blue and gold/yellow. That works for both my alma maters — West Virginia and Michigan — as well as a certain school in Indiana, and the Naval Academy. Others schools with blue and gold/yellow (in various shades — these may not be entirely appropriate) in their colors are Northern Arizona, the University of California (although the blue is a bit dark), Florida International, Southern University, Goucher, Ithaca, University of North Carolina Greensboro, University of North Carolina at Wilmington, University of Toledo, Oral Roberts, Pitt (boo!), BYU, Alderson-Broaddus, Delaware, Southern Maine, University of Rochester and South Dakota State.
Check out their other color combinations to see if one is close to your school’s.