My mom doesn't mind she herself is dating a very very dark guy, she thinks everyone is beautiful =). I know my father wouldn't have wanted me to date a Black man though (not even mulatto), he would have preferred me dating someone who looks white/off white and preferably Christian/Catholic. Same goes for my maternal grandmother. In regards to their reaction, my mother's main concern would be how the guy is and how he treats me. My maternal grandmother's and father's would be livid and furious especially if I would get serious with him. I have other friends whom family members are the same, it's so bad that they don't bring their black boyfriend into their home. My mother has never brought her black boyfriend to my grandmother's house =) that's how serious they are about it. Though weirdly when it comes to friendships they're color blind =) My grandmother has plenty of friends whom are Black (in all shades) and so did my father.