Completely smooth? I'm not even entirely sure what that means. A man with absolutely no body hair?
I guess that might look a little weird. Or are you just talking pubic hair? I find it very hard to even take an interest in my own pubic hair, and I don't even care how or if my girlfriend grooms her pubic hair, so I really can't be bothered with the shaving habits of other men. I wouldn't likely give it a thought, much less a second thought.
As for tan, unless the guy was green or purple or something equally ridiculous, I think it's safe to say that I wouldn't notice.
While I agree that your question doesn't call for rude remarks, I do wonder what you hoped to achieve? It reminds me of the countless guys who've asked if straight men enjoy getting blowjobs from gay men.