Ok got ya now!
I do know of a LOUD black leopard mare, was born head to tail in spots and was quite the surprise to her owners as her sire is solid bay with only characteristics, his background includes several spotted blanket appaloosas (blanket/spots only on their hips), solid appaloosas and a handful of QH and thoroughbreds. This mare's dam herself is also solid, her sire is a quarter horse, and dam is a characteristic only appaloosa but goes back to 2 leopards
WAAAAAAY back in her pedigree.. Neither the sire nor the dam had thrown any form of leopard foals, crossed them together and voila a LOUD black leopard filly..
Like I said earlier, *I* think that many times there are more than one pattern present (just like with the pintos etc) and the degree of expression is different and that with the multiple patterns, some are expressed more becoming "more dominant" and cover up the other patterns the horse is carrying, and I think that when you throw the varnish roaning gene in there, it aids in mimicking patterns as it changes the horse's pattern itself over time.. I think this is why it sometimes becomes very hard to distinctly identify one horse's pattern or another.. And of course not everyone will agree on what to call what pattern
and until more research is done and there's definitive proof, we'll just keep on guessing and being surprised!! lol