I used these two nail polishes:
(left to right) Barry M Racing Green (2 coats), Sinful Colors Nail Junkie (one coat)
All I did is put Nail Junkie over Racing Green, ta-dah! I love it because it's simple and festive. Also the Nail Junkie isn't too crazy and overboard and gives the Racing Green more dimension.
What's on your nails for St. Pattys? Are you decked out in all green?