I have the most common color of eyes and it certainly isn’t a green eye. This list goes like this from most common to least common.
My niece has one eye that is two colors. When she reached an appropriate age they asked if she wanted colored contacts so her eyes would be the same color. She had been teased about it at school.
She proudly said “Heck no!” People who tease me would just find something else to point out as wrong and different.” I was so proud of her assessment of the situation. I rarely think about or even notice it. In fact, now I am wondering if any of her children have an eye with two colors. I guess I need to look them in the face more and pay attention. It’s sad that I don’t know that!