The Afghan Hound Breed "standard" describes the Afghan Hound this way...
The Afghan Hound is an aristocrat, his whole appearance one of dignity and aloofness with no trace of plainness or coarseness. He has a straight front, proudly carried head, eyes gazing into the distance as if in memory of ages past. The striking characteristics of the breed-exotic, or "Eastern," expression, long silky topknot, peculiar coat pattern, very prominent hipbones, large feet, and the impression of a somewhat exaggerated bend in the stifle due to profuse trouserings-stand out clearly, giving the Afghan Hound the appearance of what he is, a king of dogs, that has held true to tradition throughout the ages.
To view the complete Afghan Hound breed standard on the American Kennel Club [AKC] website please visit: http://www.akc.org/breeds/afghan_hound/
And here's where you will find a nice overview of some of the many colors and markings of Afghan Hounds.
