I'm a Mutant

Well, science has finally proven what I already knew: I'm a mutant.

I'm not sure what this all means for my gray-blue eyes, but supposedly all people with blue eyes can be traced back to a single mutation of pigment in the iris.

Of course, I know that I have only two ancestors, anyways, so no big shocker there. But I wonder which son of Adam or daughter of Eve was the first to develop this distinctive trait of all fellow blue-eyed mutants of the world?