this is PURE speculation, so I guess take this with a grain of salt (and move it to the 'fashion police thread' if you must), but at the rookie photo shoot the rookies were wearing burgundy.. probably doesn't mean much, since every team was wearing their color jerseys, but its an excuse to use "maroon and black" in a title/post these photos :
(great caption by the way: Matt Forte of the Chicago Bears, left, and Devin Thomas of the Washington Redskins dance to the G-rated Dee-Jay during the 2008 NFL Players Rookie Premiere at the Los Angeles Coliseum in Los Angeles, California on May 17, 2008. (Photo by Carly Chamberlin/NFL.com))
link: http://www.nfl.com/photo/photo-gallery?chronicleId=09000d5d8085f1de