According to the FCI standard, the colors are permitted for uniform fauve (fawn), brindle, and piebald as well as white (brindle fauve with predominant white piebald). White markings are only allowed on brindle bullies. According to the breeding association, “black and tan”, and mouse gray and brown are considered “false colors”. Dogs with blue fur are particularly prone to health problems with their hair and skin.
in Dogs