Just pick a color you like. Do you have a favorite color? If not pick one at random and try it, you can always remove it if you don’t like it.

I like purple with a little texture (glitter is great lol).

OTOH, it’s harder to get stuff out from under my nails when they’re polished. Haven’t painted them in a while but that’s mostly bc I’m lazy lol. Been meaning to re-dye my hair for multiple months.