Ask any black family that has varying skin colors. The high yellow or light complexion individuals are often favored or discriminated against depending on the family dynamic. Did anyone see the Spike Lee movie, School Daze http://www.imdb.com/title/tt0096054/ ?
There will always be a form of discrimination. Mine was red head. When I was a kid there was only one other red head in school with me at the time and she happened to have brighter hair than I. People treated me like the plague but they treated her worse! My family treated me differently too…
Some people who know more about biology and genes can contribute to this that there are some dominate genes that will take over and pop out at odd times.
Like Actor Victoria Rowell: (Y&R’s Drucilla Winters)
In 1989, Rowell married Tom Fahey, an airline pilot. Shortly before the birth of their daughter, Maya, Rowell and Fahey divorced. Their blonde, blue-eyed daughter—Fahey is white—has caused many an uncomfortable moment when strangers insist she cannot be Rowell’s daughter. The nurse in the hospital infuriated Rowell by not giving her the baby until she had checked and rechecked the wrist band identification. Being the daughter of a mixed couple herself, Rowell is careful to teach Maya about all of her heritage. When asked her color, Maya responds, “black and white.” That’s another problem with the foster care system, according to Rowell. At two and a half she was uprooted from the care of a white family because the system felt it would be better for her to grow up in a black family, even though she was just as much white as black.
http://www.answers.com/topic/victoria-rowell?cat=entertainment