This whole black/white thing is really just a relic from the American segregation era and ultimately slavery. Only then and there, the contrast between very dark-skinned and very light-skinned people became so obvious and such a socially important feature. If you travel from, say, Central to Southern Europe, then along the eastern Mediterranean, through Israel, Egypt, Sudan, Ethiopia, Kenya and further south or west, you will see a slow and steady gradient of skin tones becoming darker. There is no clear line, and ethnicities are far more diverse and go much deeper than just skin colour. A person from Somalia is probably much more closely related to someone from Iceland or Japan than from Ghana.
Egypt, Libya, Tunisia, Algeria, and Morocco are arabized countries but the people who are arabs by race there are a minority. However, with the exceptions of more recent sub saharan migrants and slaves taken from down south, the people in those countries aren't black negro even though Afrocentrists lie and say they are. Those non negro North Africans were in North Africa LONG before the Arab invasion and the 5000 year old hieroglyphics in Egypt back this up. Also there are white expat communities in Egypt and Morocco, not sure about the other 3.