Yes, I think black people can tan. About the bruises, I just don’t know.
Of course they can. We are all a bunch of meat in some kind of semi-transparent container, and the 'sun' doesn't care what color you are to begin with.
What I am discussing is whether it is harder to tell. Both bruising and tans.
Did you ever say to a 'black' person, "Hey, nice tan." ?