Are you positive he's pure? I'm currently drooling over a buckskin Arab.... That beautiful color somehow came out in the 1/64 of that horse that isn't pure Arab. If this horse is pure, what color is this? I've never seen it.
Arabians are about as pure as it gets so they don't have a lot of colors mixed up in them. From what I understand, you get pure Arabs in chestnut, black, bay, and grey. That's about it. There are a few other things that can do funny stuff to a coat as well, like sabino. But I'm not well informed on those.
I don't see where anyone said he was a purebred... Could be partbred, some horses do come out looking 99% one breed when they're a cross... It couls also be he's 99% Arab and 1% something else, who knows?