I just got a manicure and pedicure today

I get clear coat put on. It makes the nails look healthy and clean, and strengthens the nails. At my work I use my hands a lot to display different products, and to give people visuals of how wide some things are "like the size of my pinky/thumb"
I get compliments quite often on how healthy they look, everyone assumes its a natural shine

I havn't done any colours, and i don't think i ever would personally, but I know a lot of people who do, and look great.
And OT but, men, get your **** mani/pedi'd. Its important to take care of your hands and feet. And its not 'feminine', and you'd be surprised how often men go. Even just today two straight (im assuming anyway.. one was very construction worker bro and the other was a business guy) came in to get theirs done while i was getting mine done. Hell, even my dad gets it done to help prevent ingrown nails and callous) If you want a natural looking shine but no polish, just ask for them to buff them. (usually they do it anyway)