Looking for a copper eyeliner?
Urban Decay 24.7 Glide on in " Lucky " is a pretty bold copper that would look stunning on green eyes:
Also, try the Nars Soft Touch Shadow Pencil in "Skorpios"
Or one of my favorite liquid liners, the Sephora Collection Eye liner in #7 Glitter brown which is slightly darker but has hints of copper gold!
I have hazel/green eyes and enjoy using Stila Sparkle Waterproof Liquid Liner in Rock Candy - it's described as a "sparkling warm brown" and I find that when it's on, it has a copper tone to it. It is easy to apply and lasts all day which is great!
I love all the recommendations. One of my all time favorites is the Urban Decay 24/7 pencil in Lucky. You can use this product all over the lid as a waterproof eyeshadow too. Just make sure to smudge and blend one eye at a time. If not, the pencil will set and become budge-proof...literally!
Diana has some awesome recommendations. I also wanted to add a few more.
Sephora Collection Liner Electro - Glitter Eye Pencil
Sephora Collection Retractable Waterproof Eyeliner
Another option is the Urban Decay 24/7 Glide-On Eye Pencil in LUCKY./
It's a beautiful deep copper which will definitely bring out your eyes.