When I was a kid there was a black female classmate in my school. All her features were dark except her eyes. Her eyes were deep blue like the ocean. They weren't contact lenses. It was her natural color. Both parents (blacks) picked her up early one day and the father had blue eyes too. The mother didn't but she must've been a blue eye carrier.
Certain black people do have naturally blue or green eyes. Do you find this surprising?