Forum:Transforming Foals

I have several appaloosa horses in my barn. I recently produced an appaloosa foal. Out of curiosity I looked up "horse breeding" and found that the appaloosa foal transforms into a Black horse. I am not sure why an appaloosa foal doesn't turn into an appaloosa horse. The same should be true for a Pinto or any other horse that was purchased with Farm Cash. Does anyone know why this is?