You will find almost all light skin black guys have genitals much darker than their complexion and it’s also common with men of latin, Italian and middle east descent. If you’re a white guy and have dark genitals you probably have some those cultural ancestors in your genes. I’m a light skin black man and my dick is much darker than my complexion. Funny story, In high school one of my closest friends at the time was a full blooded Italian. Me, him and another friend of ours were hanging out one day and we were talking about this girl we all wanted to get with. My other friend (who is also black) made a joke and said “you know once she go black she not going back”. He looked at both of us, pulled his pants down and said “I know” and showed us his very dark colored dick.