Oh, that's brilliant. We have so much fun with identifying black or white as a bad thing, let's amplify the fun with 'not black or white ENOUGH.'
But....why? What does it matter?
Seriously. What's the position under consideration, and why deny it to someone who isn't [color] enough? Not black enough for a job? That should be a merit thing, no?
Not white enough to marry? Lots of things about my wife made me choose her. Her skin color was not on the list.
Not black enough to...what? Drive? Sing? March against gun control? March for voting rights?
I don't get it.