In 1929 the blues were accepted and in 1933, the sable variety was approved. These are the same 4 varieties still shown today. Black Silver Martens are the most popular variety of the breed. The black should be a jet black color, with the black carrying as far down the hair shaft as possible, with sharply defined contrasting silver markings. The undercolor should be a dark slate blue.
Eye color is a dark brown.
Blue Silver Martens are the second most popular variety in most areas. The blue color should be an even dark blue overall. The eyes are to be blue-gray. The sharp markings in the blue variety are often slower to fully develop than in the blacks. Chocolate Silver Martens should be a dark rich chocolate, like semi-sweet rather than milk chocolate candy.