Spencer, Mr. Mullen can give you all the technical details, but my common advice on Color Deficiency is that it makes an already competitive process even more competitive. Color blind limits your opportunity for service as a Line Officer in the Navy (Surface, Subs, Air and other fields). The Mission of USNA is primarily to develop Line Officers, so naturally Color blind is disqualifying. USNA does have the ability to grant waivers, but they are few and far between. (I've seen numbers bantered about here from time to time, without verification ..but something like 10-15). The bottom line, unless you are a superstar, reapplying is a long shot.