Honestly, I would prefer a female to go natural, but if she likes wearing make up, that wouldn't change anything. My ex used to go natural, but whenever we would go out, she would do herself up all glamorous. As long as it's not excessive, then i don't see a problem with it. Especially when they have them shiny looking lips. I can't turn away lolz
I picked a bit of make up. A touch of foundation, eye-shadow or blush is often nice. I don't like much in the lipstick department, especially lip-gloss.
I see you mentioned smell, OP, but I wouldn't call fresh out of the shower "natural" since that's mostly soaps and such that you're smelling then. What I would call a natural smell is what you have when you wake up or after a certain amount of physical labor. And from what little I've experienced, I really like the natural body odors of both males and females.