I have not gotten the Appaloosa Journal/News for a long time, don't know if that rule changed or not. That reminds me, I still have all those magazines in my basement. Dating from the 70's...lol
Appaloosas can be a heartbreak to breed for show... You put a whole year of waiting, and really hope for color... but sometimes you get really nice horses that would be show quality but for the lack of one spot. Paints are the same way, color breeds are just such a gambler's wager.
At paint shows, I ~believe~ all the solids are separated into their own classes, but they can be just as competitive. The offspring of Paints, once outcropped from regular QH and TB stock, can't be returned to AQHA registry even when they are solid and indestinguishable from any other plain brown QH.
There is a big fight brewing in the ApHC right now. Big guys are trying to push through another program to replace CPO (which now says you have to breed back to reg. papered App) - I think they are calling it API or something.
There really isn't any reason to outcross anymore - every possible body type is available in the Appaloosa gene pool and all of the major AQHA, Thoroughbred and Arab sires have registered appaloosa get. People do it now because it's easy, because they are too lazy to deal with an app personality, because they really want a quarter horse LOL - lots of reasons but none of them sound.
Okay - off my soap box.