There is another thread here where they were talking about red yorkies. They breed them in to bring better color into their lines. I will find the link for you. You may have some expensive pups on your hands that other breeders might be interested in.
Here it is, from 'is this a Yorkie"
Ok not too long ago I heard of a red legged yorkie which most of the times has coarse/wire silk coat. Their body temp. is usually lower than normal and they have a deeper red color to them. Breeders usually use these yorkies to get better colors in their lines. The hair on their legs and face I believe never gets long like a true silk yorkie. To me (JMHO) this is a true full blooded yorkie and he seems to fit the characteristics of a red-legged yorkie. I will google and find out more!!!
Smiles,
Myra
Here at this site the breeder just comments about it a bit. http://www.geocities.com/angeljulie2/bitney.html
I will look for more site but I have heard a few breeders mention it these past couple of days on a yahoo group I belong to...
adinasmommy is her screen name