I watch HGTV a lot and there are a LOT of married couples with white husband and black wife... and lots of them with black husband and white wife. I think it is no big deal. their kids are beautiful in all cases.
When I was growing up in Okla mixed marriages of asians, whites, American indians, Hispanics, etc were considered uncool. Now those are all mainstream, no big deal, totally socially accepted.
I think in a generation or two there will be no big deal about blacks marrying whites. Just look how silly it was when it was not considered OK just for a caucasian to marry a Cherokee... And my family back then was 1/2 white and 1/2 Cherokee. My great grandmother was half and half, and said to be a beautiful tall statuesque woman with dark olive skin, jet black hair and blue eyes. I will enjoy meeting her in heaven some day.