My Topher has the silver coloring....it's quite beautiful actually...and he's all yorkie. I've seen such a variation of coloring in yorkies here on YT...from dark red to black to silver. Quite a range!
Your pup looks like a yorkie to me!
Here's Topher the day he got his summer cut. You can really see the light coloring in this picture:
__________________  VAL, TOPHER AND SOPHIE |