You are looking for a yorkie that is referred to as a "golddust yorkie". If you do a google search on golddust yorkies you will find a few breeders who offer this coloration. You can find information here
Golddust Yorkshire Terrier Dog Breed Information and Pictures
Info from the site above: "The first Golddust appeared shortly after the first tricolor Biewers, and was initially registered in Germany as the "Biewer White Gold" in the pedigree books".
I have had the pleasure of seeing these exquisite golddust yorkies in person and they are quite beautiful. Of course, some think that one should not breed for the gold color. I think it is a matter of preference.
One exceptional breeder is Sharon of
Biewer Golddust Yorkshire Terrier Puppies For Sale Virginia She is very knowledgeable breeder and has a wealth of information.