Of course, the definition of who is Black has always been a troublin thing for folks since that definition differs from one culture to another and changes within the same culture depending on who you ask and what time of day it is..

First off, one can't assume that the way a people look now is the way their ancestors looked..A good case in point are the ancient Egyptians and Egyptians today..An even more telling example would be African Americans in the 18th century and African Americans today.

I don't believe that there is any pure race of people. And I believe that the Berbers were descended from African people who were darker than they are now and also had children by darker skinned Africans..

It happens now and then, folks.

I would dare say that there are countless numbers of people who are considered to be or who consider themselves to be "Black" who look whiter than some people who consider themselves to be pure Europeans.
And this does not count the large number of Black folks who are knowingly passin for White or whose ancestors passed for white...

For more general information on the people generally known as Berbers, see this link:

Berbers

Here is one excerpt from that site:

"THE ANCIENT Berber culture is extrordinarily rich and diverse, with a variety of musical styles. These range from bagpipes and oboe (Celtic style) to pentatonic music (reminiscent of Chinese music) - all combined with African rhythms and a very important stock of authentic oral literature. These traditions have been kept alive by small bands of musicians who travel from village to village, as they have for centuries, to entertain at weddings and other social occasions with their songs, tales, and poetry."