Color breed

On the other hand, with the prevalence of DNA testing for parentage, many horses once forced into color breed status due to being born the "wrong" color and thus deemed undesirable or of questionable parentage by many regular breed registries with cropout rules can now be accepted for registration.

For example, some mainstream breeds, such as American Quarter Horses, Tennessee Walking Horses and American Saddlebreds include individuals of the palomino color or pinto patterns, as well as a wide variety of other colors.

With stallions, double registration may also increase their breeding value by widening the set of interested mare owners.

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.

Due to DNA verification of parentage, today many mainstream breed registries that once excluded certain coat colors will now accept them as long as the animal can be proved pureblooded.