Eh... it's black?
What do you say when:
- You are white
- Your wife is white
- You are there, in the hospital, for the big moment, doing your best to not faint
- and you see a dark head popping out between the legs of your wife?
embryos of a white couple went to a dark couple and vice versa. The white couple got two dark twins but the story doesn't say what happened to the dark couple.