My versions of Raphael, Bonita's mate
I know he's not described as having any markings in the book, but I looked at the book art of both Sierra and Bonita for reference. Now, I understand that Bonita is generally accepted to be a greyed out sabino, so she carries the genes for Sierra's markings, but they're hidden beneath her grey coat. But the artwork of her seems to have grey hooves and no visible pinking around the nostrils. This to me suggests that she doesn't have markings, which would suggest that the sabino gene would come from Raphael. So, I made him a minimal sabino; he has high legs whites and a thick blaze, but no white spots on his body.
Personally, I prefer the image on the right, but I understand that it's only my theory for his colouring. So, I made another image of him (on the left) without any white markings.
Drawings (c) me
Characters (c) Kathleen Duey/Dreamworks
Background (c) Spirit:SoTC