Green (and all its shades) is my favourite color and luckily it's one of the colors of this summer, together with light blue and all the cold colors that reminds the sea. That's why I bought the iPhone cover I use right now and that is my favourite. The only rule about nail polish is that is has to be bright,so choose the most bright shades you have and go for them. Here are the two I'm probably going to use the most this summer.
Wallet - Stradivarius
Light blue nail polish - 340 by KIKO Milano
Green nail polish - Viva la Green by Essence
Bracelet - H&M