A few months ago I sold a miniature 2 year old filly to a friend. When she was born she was either a darker dun or a lighter bay with a thick dorsal stripe. I can't tell you her foal color for sure, as I only seen her as a foal in pictures. Her dam was a bay snow flake appy and her sire was a black and white tobiano (but I believe he carried sabino). She had 4 tall white socks, a sabino spot in her girth, and snow flakes on her rump. When she shedded out she lost her dorsal and turned into a greyish chocolate color (almost a dark silver color but had a black mane and tail) Well she always looked the same the entire time I owned her but now I just heard from her owner that she has developed a dorsal again, only this time its white. She will try and get a picture of it to me, I will post it when I get it. I have never heard of such a thing. Could be be from the sabino? Or the appy? I thought it might be lacing but according to her it's a dorsal. I know the owner very well and she never puts her horses out side in the rain so I know it's not from rain scald. Any ideas what it might be??
No such thing as a white dorsal. And the filly is probably just a bay that is going to be a varnish roan. If there is no dun parent you can't have a dun. Varnish roan appys usually change at 2 years old and big time. They almost don't even look like the same horse.
Yes, I understand that she's not a dun. When she was born she born with countershading. I still havent got a current picture of the dorsal but here is what she looked like as a foal (sorry there not the best but all I had right off hand):
And Here is what she looked like at 6 Months when I got her:
I didn't know what color to consider her when I registered her, so I let the registery pick and they put her as a silver dapple, which is not possible as she has black mane and tail and niether parents are silver carriers.