The green nails then have a single coat of Sinful Colors neat-o duochrome Bali Mist. At certain angles, the green switches to the prettiest blue.
For an accent nail, I used a coat of NY Color Rock the Party, another duochrome. This polish isn't a real obvious duochrome, but it does turn green at the right angles in the right lighting. Most of the time it has this purple cast, which is nice on its own.
All nails then have a coat of China Glaze Fairy Dust and Sally Hansen Insta-Dri top coat.