you should check out this post http://www.audreydao.com/2009/04/04/how-to-find-the-best-colors-for-your-eyes/ It suggests colors that will make your eyes pop.
I read in a book that purple and copper looks good with green eyes. try dark colors so your eyes will stand out. or maybe darker jewelry dont look like emo or anything.dark green or dark blue looks pretty too. hope i helped.
To make green eyes pop, you'll probably want to use dark brown, purple or gold eyeshadow. Since purple is the opposite of green, gold works for any eye color, and brown is just awesome, they will all work well. Also, try some black mascara. Hope I helped!