Buckskin body color yellowish or gold, mane and tail black; black on lower legs; lacks primitive markings.
Overo (pronounced: oh vair' oh) The white usually will not cross the back of the horse between its withers and its tail. Generally, at least one and often all four legs are dark. Generally, the white is irregular, and is rather scattered or splashy. Head markings are distinctive, often bald-faced, apron-faced or bonnet-faced. An overo may be either predominantly dark or white. The tail is usually one color.
Splashed White Splashed white is the least common of the spotting patterns in horses, although it is increasing in frequency as breeders use more and more splashed white horses in their breeding programs. It occurs sporadically in a number of widely divergent breeds, such as Welsh Ponies, Finnish Draft Horses, Icelandic Horses and Paints.
The pattern usually makes the horse look as though it has been dipped in white paint. On a dark horse, the effect can be that of an ice cream cone dipped in chocolate. The legs are usually white, as are the bottom portions of the body. The head is also usually white, and the eyes are frequently blue.
The edges of the white are consistently crisp and clean, with no roaning. Some of these splashed whites have dark toplines, but on some the white crosses the topline.
The splashed white pattern was originally studied in Finnish Horses, and was reputed to be a true recessive pattern. If this were the case, the pattern would be unlikely to occur unless two splashed white horses mated, which is not the case.
Recent evidence is consistent with this pattern being caused by a dominant gene. The main problem in the past appears to have been that minimally marked horses were classed as nonspotted, which resulted in erroneous conclusions.
Some people have observed that many splashed white horses are deaf. This is not much of a problem if the trainer realizes the limitations of the horse in question, and many of these horses go on to lead full, normal and productive lives. If trainers rely on many verbal cues, though, these horses will be labeled as difficult, stubborn, and can be psychologically ruined by techniques inappropriate for a deaf animal.
No homozygous splashed white horses have ever been documented, leading to the suspicion that this is yet another gene that cannot exist in homozygous form. If this is true, the loss of hearing probably occurs early in gestation rather than at term, so this is distinct from the lethal white foal problem where defective foals are born.
The best strategy for splashed white horses, then, is to mate them to horses without the splashed white pattern.
No you don't. The registries are known to mis-register horses all the time. They are also known for not registering horses they think are not possible. JC registers greys are roans, greys are white, and other such color.
It is possible for him to be buckskin genetically - his sire is a pally and his dam a bay. It is hard to judge from the photos provided since they have been very obviously and very badly touched up to bring out the golden hue.