Can a lhasa apso be full blooded and have a blue speck in the brown eye. Are they done growing at 6 months?

I have a Lhasa mix pup and she was about done growing at 1 year. She has brown eyes with no blue... She weighs about 15 pounds and is mixed with a doxen so that would nt really affect her weight. Just let your puppy grow; mine is not a purebred but I still love her!