Most Helpful Guy
I'm not a fan of outrageous designs, it just looks crazy and uncomfortable. I've seen some with, like, fingernails that looks like a dessert platter.
The ones I like are the normal looking ones. Plain colors. Monochromatic and simple. Not something that stands out too much. Sometimes I think just a clear polish is enough.
Because your hand is one of the most expressive part of your body, along with your face, it is a very visible area. And much like how you get turned off by seeing a woman completely covered in make-up trying to look glamorous, it is not good to go out of your comfort zone just to impress someone.
Would you want to attract people who only liked that 'not-really-you' persona? What if you revert back to your normal 'look' again and they didn't like it?
So always try to put on a style that fits your own. Something that says, "This is who I am, I like the way I look, and if you like it too, then I like you ;)" kind of style.
Be you. Do the style that is comfortable for you. And if it attracts someone who likes your tastes, then there you go!