If you are interested in a registered Yorkie (AKC) ask to see the registration papers for the sire and dam as well as the AKC litter registration. According to AKC, the color should be Blue and Tan. Optimally, the blue should be "gunmetal blue" which is a dark grey/black, but in reality ranges from light greyish as the yorkie bitch pictured to very dark almost black. The tan ranges from light tan to a rich dark gold. Pups are born black and tan and look very much lik
e teeny tiny rottweilers Genetics and bloodlines determine coloration. Here is a link to the official AKC standard:
https://images.akc.org/pdf/breeds/st...ireTerrier.pdf
To answer your question, the bitch does have the characteristics and coloring of a pet quality yorkie.