I’d be surprised if some African countries don’t celebrate darker skin as “more” African.
They do not. Africans in Africa do not have a concept of being “African.” They are Ibos and Masai, Zulu and Fulani, etc. The middle class city folks sometimes think of themselves as Congolese or Kenyan.It is only elsewhere that they become “Africans” and mostly only if they are a slave class or of a slave background.