Blue eye, babys got blue eye

Our new dog Chanel is a Shih Tzu. She has a touch of blue in the bottom corner of her left eye. My sister in law has a pup from the same litter and her Shih Tzu has a pure blue eye with pink skin around it.
It's just a genetic anomaly, but I think its distinguishing and gives Chanel an intriguing characteristic. .almost like a Bond villain or something.
Sapphire eye.