Hi, I wouldn't worry if your baby changes or not. My one girl Princess Pia will turn two years April 12th and she weighs just about 2 lbs. and is steele blue and tan head. My other girl Trixie Bear will turn 2 yrs. Sept 7th and she weighs just about 4 1/2 lbs. and her body is as black as can be and her head is a combo of colors. Since Pia is steele blue I don't think smaller size determines the color of the yorkie. I really love the dark black ones and unless your showing I wouldn't worry about it.
