I am getting a yorkie and all the pictures that I have seen of full grown yorkies they have gray hair, but my friend, who has had his yorkie for 6 years, is still that same black and brown color that the puppies are. So how do I know which puppy wont go gray.
The color is called “blue”. They are supposed to turn blue. It’s in the breed standard.

The color is called “blue”. They are supposed to turn blue. It’s in the breed standard.
References :
There’s lots of information here to help you.
References :
http://www.goldenrayyorkies.com