they are generally mutts who, in the lack of proper acceptance from either group, try to latch unto one of them & prove their loyalty by being it's most vocal supporters. that's also why you often see obnoxious mulattos speaking about slavery.   they are a large nation that historically absorbed eastern ones, those eastern people were later pushed into the greek heartland by the islamic conquests, hence you have some darker skinned greeks. that said the majority of them are whiter than that.
Israel