Its totally normal for their color to change i have a five month old girl she is black and tan with some greying on her head and I have a four month old with more of a white color on her head thats coming in. I love watching the color change.
Take lots of pics you will like looking back at them as your pup grows
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mommy of Jersey Girl d.o.b 3-20-12, & KIWI d.o.b 4-18-12
& momma to one in yorkie heaven
Kagan 12-24-06 /8-13-09 forever loved & forever missed