What bugs me most is the color registries, and how some people act like those are breed registries. I remember someone who posted on here a while back asking how her friend's red dun horse could possibly be a buckskin (as the friend was insisting it was). Turned out it was registered with the Buckskin registry, and was therefore a "buckskin." I'd say no... the horse is a red dun who is registered with the Buckskin Registry; when someone asks you "What color is your horse?" or "What breed is your horse?", "Buckskin" is not the correct answer.