Peppy Barrel Racing, do you have Pepper's parents on site? If not...how do you know that they are not grey now......greys turns grey at various rates....just because they were not grey when Pepper was foaled, doesnt mean they are not grey now. Unless of course you have them both on the farm yourself. When you say Pepper was born with a red mane, do you mean his foal coat had a red mane, or did he have a red mane past young the foal shed?
Sorry for all the questions....I am just really curious about color fading on a non grey and a non appy. I know appy color genes can pop up time to time on other stock breeds. I just havent heard of max sabino causing a color to fade. I am curious to hear some more expert opinions here!
Lol I know for certain 100% without a doubt he is not grey. I know the owners of pepper's dam very well that's how we ended up with him she is a black and white Overo mare her name is magic. Those people know the breeder of pepper's sire very well somewhere I have a picture if him he is a loud Chesnut Overo. Here is pepper's lineage from allbreed this is straight from his registration APHA papers. Sonnys Butch Cassidy Paint
. As you can see there is no grey in his lineage. White markings will always have pink skin underneath pepper is all white except where the red ticking is/was. As he aged white takes over where the red was. There is still some red hairs in his mane and tail you just gotta get up close and personal to see them. There are red ticks on his ears, neck, shoulders, rump. They aren't really noticeable till he sweats though but they are there. And yes the baby mane and tail was bright red but now it is almost all white.
This is an APHA explanation of peppers color
The whitest of the sabinos are nearly or entirely white. Some retain color only on the ears. Others are indeed white all over. One of the whiter ranges of expression includes color on the ears, chest, and tail base. These are the medicine hat Paints of the native tribes from the Great Plains. Most sabinos that are largely white are very speckled and roaned, and some can be confused with Appaloosas.
Some sabinos are quite white and survive, which points to this being entirely different from the frame overo that results in lethal white foals when homozygous. Sabino, by itself, is not associated with lethal white foals.
Also OP did you say your horse has multicolored eyes that is a sabino trait.
Many sabino horses have eyes that are partially blue and partially brown. Flecks, patches and roan areas are common on sabinos, in contrast to the frame overos that are usually more crisply marked.