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Some color breeds only register horses with a desired coat color if they also meet specific pedigree criteria, others register animals based solely on color, regardless of parentage. A few pedigree-based color breeds, confronted with the reality of many animals born without the proper color even though they are from two registered parents, have modified their rules to allow registration of animals with the proper pedigree even if they do not possess the proper color.
Many horse breeds, such as American Quarter Horses, Tennessee Walking Horses and American Saddlebreds include individuals of the palomino color, as well as a wide variety of other colors. However, a color breed registry, such as the Palomino Horse Breeders Association (PHBA) , accepts only palomino (or palomino-looking) horses—regardless of their particular breeds. Thus, Palominos can be considered a color breed. Another example is the pinto horse color. Horses of many breeds can be registered as Pinto if it they have the correct spotting pattern. White horses also once had their own color registry that included cremello horses, but not grays.
Many horses eligible for registration with their own breed registry and are of a particular color are often "double registered" with both organizations, often increasing their sale value by doing so. With stallions, double registration may also increase their breeding value by widening the set of interested mare owners.
Some breeds, such as the Norwegian Fjord Horse, Appaloosa, American Paint Horse, Friesian and Haflinger have distinct physical characteristics and recorded pedigrees, but also typically have distinctive or colorful coats might be considered a "color breed" by some, but they are a pedigree-based breed. For example, Appaloosas are usually spotted, but a solid-colored offspring of registered parents can still be a registered Appaloosa. Likewise, a solid-colored American Paint Horse that has registered parents may also be registered.
On the other hand, while Friesian breeders have deliberately bred to exclude chestnut horses, and will only register black animals, these black animals also must be Friesian by pedigree and no other bloodlines are allowed into the registry. The same is true of Norwegian Fjord Horses, which are all a variation of dun.
Some horse breeds exclude certain colors that are considered signs of a crossbred animal. For example, other than the Sabino pattern, the Arabian horse registry excludes all spotted horses. The Finnhorse was also bred for decades to exclude all colors but chestnut, and specifically to remove such "fancy" colors as roans, grays and spotted (sabino), which were seen as indicators of foreign blood, though that policy has now changed, as for some particular colors, this might hold true - for example, all present gray Finnhorses can be traced back to a certain gray mare of dubious pedigree. Nowadays all colors are accepted as long as the animal can be proved pureblooded, and many colors are specifically bred for.
- http://www.colorbreedcouncil.com/ Color Breed Council (USA). Includes both color breeds and pedigreed breeds with a color preference.
- "Color breed council conducts international equine judges seminar." Article explains who the members of the council are and what the council does.