i was just going to ask about this. my pebbles is 14 weeks and is JUST starting to change hair colors a little bit. it is growing out a light golden tan color on top of her head where it is black, but you can barely see it. her back is not changing color though. it is still black! and it is getting long! I am wondering if her back will stay black.. i see other puppies at her age and they are well on their way to changing colors at her age