Why has my baby's skin color changed so much and what can I do about it? (easybabylife.com)
Scientists say that skin color changes due to ultraviolet rays and geography. (interracialdatingguide.com)
Another study was done on 35 students for a period of 6 weeks and it was discovered that eating 2 extra portions of fruits and vegetables a day created detectable skin color changes that made them look significantly more attractive. (rawsomehealthy.com)