Perhaps, if you wanted to register him Oxer, you could look into Pinto registery or Sport Horse of Color. I am pretty sure he would qualify for PtHA but I'm not sure about Sport Horse of Color. I don't know much about that registery, there are quiet a few registeries out there that are worthless such as the Blue Eyed Horse Association or Grade Horse Registery, you basicly are just paying for a piece of paper that has no value or use to it really. I don't know if Sport Horse of Color is any good or not. PtHA has a fairly good reputation however, they have a pretty big show circut and lot's of year end awards and fun stuff.