 Solid-colored Appaloosas are restricted in breeding.During the 1940s and 1950s, when both the Appaloosa Horse Club (ApHC) and the American Quarter Horse Association (AQHA) were in their formative years, minimally marked or roan Appaloosas were sometimes used in Quarter Horse breeding programs.At the same time, it was noted that two solid-colored registered Quarter Horse parents would sometimes produce what Quarter Horse aficionados call a "cropout", a foal with white coloration similar to that of an Appaloosa or Pinto.