I usually use pink, or a bright strong pink going towards red, or white, or even light blue, a shade going close to gray.
GREEN! Always always pick green. The best fucking colour ever. I don't care that you've already painted your fingernails, you need to do it again. For the green!! < tht green! Nah but seriously, i pick green. And yeah, I have fattish fingers. And I play guitar.
there is no "clear" option.. I feel so unhip I like clear nail polish...I use to put nail polish on my lips when I was little cause I thought it was lipstick...