Horses that are ridden and gallop are most frequently in the United States Thoroughbreds. All breeds of horses have calm, quiet horses as well as anxious, dangerous horses. The training and handling styles affect manners more than does the breed. Silhouettes of three breeds of horses. The color of the horse has nothing to do with disposition, performance ability, or soundness.
Color is, however, a significant determining factor in many people's decision.
Many breed registries such as Buckskin, Pinto, Appaloosa, Palomino, Pony of the Americas, and Dominant Grey are based primarily on color. If you are breeding or involved in these breeds, then color should be high on your priority list. Otherwise, the training, disposition, and soundness of the horse are more critical. The conformation or shape of the horse will dictate the athletic ability and the ability to stay sound. Straight legs, especially through the knees and hocks, suggest that the horse will not breakdown as soon as a horse with crooked legs.