39+ Books About Different Skin Colors If we men follow a few. Eumelanin comes in primarily brown and black hues, while pheomelanin. When one sibling has darker skin than the other - The ... from www.washingtonpost.com They believe that the various groups could have. Children's rich observations and questions about color, caste, race elicit accurate yet straightforward responses. Differences in skin color among individuals is caused by variation in pigmentation, which is the result of genetics.