When jockey Kent Desormeaux and undefeated Big Brown spring into action in the 133rd Preakness Stakes on Saturday, their bid to move to within one win of a Triple Crown will be accompanied by a rush of sights and sounds. The jockeys' bright, shimmering silks will form a montage of colors after the starting gate snaps open. The fans' roar will all but propel the pounding hooves into the first turn at Pimlico Race Course.