my boyfriend and i recenty started having sex. he claims he is spanish and a lot of other nationalties. his penis and scrotum are much darker than any of the rest of the skin on his body. is this indicative that he is of african decent possibly? his penis and scrotum are darkish brown with a hint of purple. is there some other explanation for his penis/scrotum discoloration? there is no dry skin, no rough skin, and he has no problem getting staying/erect. he is 41 years old.