Very red penis when erect

A friend of mine when he is erect his head gets like dark red .. says it doesn’t hurt or anything and that it has always did it.. .. all I could say was if it hurts or is uncomfortable when having sex got to a doctor … he said it doesn’t bother him.. so he never went
 
Well when Im in early age, junior high school ish, My glans is so red like red wine, maybe it because of the rush of blood
But after i got sex, i dunno whether there's a connection or not, now my glans is aint so red like it used to be
Purple red ish maybe
 
Well when Im in early age, junior high school ish, My glans is so red like red wine, maybe it because of the rush of blood
But after i got sex, i dunno whether there's a connection or not, now my glans is aint so red like it used to be
Purple red ish maybe