Solid black is also a very acceptable color, but it is less often encountered. It is seldom completely solid, with most dogs showing at least a few tan hairs between the toes and around the rectal area, under the tail. White markings are frowned upon, though a small white spot on the chest is usually not penalized. All white dogs are disqualified from conformation competition, though they can be shown in performance events. The eye color should be dark, or at least blend well with the color of the dog.
Light eyes are especially unattractive in dark or black dogs.
Also, any nose color other than black is a disqualification. This effectively disqualifies any liver or blue-pigmented dogs, as their nose color would not be black. In addition, both livers and blues usually have pale, yellow eyes, which as mentioned above, are not desirable. Something further needs to be mentioned about white. Though it is a disqualifying color in the standard, there is a breed called the White German Shepherd.