Dressage judges are seeing spots before their eyes - Appaloosa spots, that is - and Paints, Palominos and Quarter Horses too. This year has been a stellar one for the sport as the American Quarter Horse Association (AQHA) approved dressage as an event in United States Equestrian Federation (USEF) and United States Dressage Federation (USDF). Now, AQHA registered…