Shih Tzu's can change color till the day they pass on, some more so then others. Also shih tzus eyes can only be blue if their points are blue lips,eye rims, nose and pads. Liver shihtzus have yellow/green eyes. A liver nosed shihtzu will never have a black hair on their body. I have blues ,livers and standard colored shihtzus. My brindle and white is going to be 3 years old and she was a gold/red brindle and now is a silver brindle. She has changed the most as some colors do more so then others. ... View related article.