I'm white and my son's father is light skinned black and my son came out white. I'm pregnant with my second and have no idea if he will come out the same tone or darker as i have been told that even though the children have the same father they could be different skin tones.
Bearing in mind though that in the first 6 months a mixed race baby may not be the true skin tone that it will be for life so this too can be deceiving. Either way i don't think it makes a difference, it's just a case of wait and see and await the nice surprise.
Hope this helps.