Despite the colorist's odd choice, it's clear to me that the way artist Deryl Skelton drew ben Zoma's features in that issue is not consistent with a "black" ethnicity. His hair is straight (or slightly wavy) rather than tightly curled, which is kind of a dead giveaway.
Well, you can't marginalize or generalize all black men.
Some of us black men do wear our hair "wavy" as a style. The aforementioned, Billy Dee Williams still does to this day, as do other black male actors. Not too mention the mixed-race black individuals (be they half-Asian, half-Caucasian, half-Latino, etc.) who will gain certain features from both parents.