My Lizzy is blowing her coat (shedding it) and it seems to be coming in dark. She is two years old and it has always been a light tan color. Now it appears more dark brown with a little black. She was born with a blue coat, but after shedding it her first time, it came in the light tan with a blue undercoat. I have not heard of them changing colors before. When her coat is completely back in, will it be the same as it was?