Now wouldn't this be a surprise!

Just found out from the woman I'll be marrying in two months that her mother's great grandmother was a light-skinned black woman. Yeah, ok. That's cool, I thought at first. Now I'm told by a close friend that it is possible for us to have a black baby. No, I am not a racist. But isn't it normal for me to have some concern? I know that when that moment comes a year or so from now when we become parents our only real concern will be the health and welfare of our child. And I know that I will love he or she to death no matter what. I think of all the speculation and unasked questions from all of the people that we know. When I asked my mom about this she just shrugged her shoulders and said that I should think of all the couples who can't have children and for me to knock off my nonsense in worrying about this. And what difference would it make anyway. It would still be our child. Ok. My mom slapped me up pretty good by saying that. But I still wonder if our child will have light brown skin. Under the circumstances, isn't it normal that I'm concerned about this?