Not a single day in my entire career (including ROTC) have I even worn anything other than white socks with a flight suit, ABUs, DCUs or BDUs. Granted it was some SNCO and not my boss, but I was walking into the chow hall at the Deid once and had some douche E-8 First Shirt ask me if he could do a sock check on me... I said, "Hey Senior, if you want to check my socks then I'm dropping my pants right here for you to do it... and don't think I won't!" He decided that a sock check wasn't necessary... and my 1 Star boss that was in PTs who I was having lunch with had a little impromptu "counseling session" with the Shirt about harassing airmen.