What if somebody’s 50% black, is that enough, or is she going to have a pigment meter at the door?
They will have a brown paper bag at the door. If you are not darker than the bag, you are out.
The irony is that a large percentage of American blacks are near the 50% number. Most blacks arent really black as there is a lot of whiteys in their family woodpile.
This is the age of "Be All You Want To Be" isn't it?
As long as you self-identify as someone who doesn't have white skin you should be good to go.