In order to celebrate human diversity, there should be more pictures of non-White people. While I understand that even GirlsAskGuys have this fault of using too many pictures of White people, I believe this does not mean that regular users should do the same. Rather, to balance out the White-majority pictures, 60% of the people pictures must contain people of milk chocolate brown or dark brown skin.
Pictures of dark-skinned people do exist! You just have to search for them more carefully on Google or Bing! I prefer using Google, because Google seems to be smarter at finding relevant images for me. Below, I am going to provide examples of such pictures.