A lot of people don't know that German shepherds come in a color other than the standard "brown with black saddle." Many a white German shepherd has been dismissed as a shepherd/husky cross, or some other mongrel.
But it's true: German shepherds come in white.
Despite Adolf Hitler's best efforts!
In fact, the first registered German shepherd was a white dog, a working dog named Greif. The white coat was seen as a superior color by the sheep herders who originally brought the breed to market. A white dog is easier to see against a grassy, hedgy background.