For dark skin, a dark orange or dark pink looks good. For fair skin, try a dark maroon color or french. :)
right now pastel colors are all the rave like lilac and mint green colors kind of like that, but the complement fair skin and stand out beautifully on darker skin because it contrast well. hope i helped i like revlon has some good colors i saw jessica beil wearing the pastel nail polish!
for fair-black, red ,green and for black-blue , silver