Idk how this is possible because I thought pure subsaharan africans couldn't have hair colours that weren't black naturally. Maybe they might be mixed or maybe their hair has been dyed with henna but i'm not too sure because melanesians can have blonde hair naturally from a different gene that causes blonde hair in europeans even though they're dark skinned. Even east asians don't have these hair colours naturally.
Red hair somali boy:
Blonde hair afar boy:
Somali boy with short brown hair:
Red hair somali boy:
Blonde hair afar boy:
Somali boy with short brown hair: