What are some colors of a German Shepherd?

Sable (in shades of red, blue, liver, and silver)

Black and Tan (Saddle Back, Blanket Back, Bicolor)

Black and Red (in the same above patterns)

Blue and Tan (in the same patterns)

Blue and Red

Liver and Tan (in the same patterns)

Liver and Red

Black and Silver (in the same patterns)

Black

Liver

Blue

White

Tab/Buff (creamy brown color)

"Panda" (white patterns coverign 40% of the body)

there have been some cases of solid Reds but those may be mixed.

There has been one case of a white dog with half a black mask.