Well, people in Africa come in all sorts of shades. But equally, no-one expects that something described as African must apply to the whole continent. Skin tone typical of an Ashanti can be described as African even if it is different from a Berber, and vice versa. But the truth of the matter is that it's not worth worrying about. I get irate at those who spend forever trying to "improve" the language and do nothing about the issues that matter. "Oh, we no longer have a problem with blind people - they aren't blind, they're just visually impaired." And so on.