Because of the sheer color you can receive an ombre look on your nails.
Unfortunately it's already sold out on the European site but you might have luck in one of their shops. Price is EUR 6.-
I really like the green-blue combination and the red-purple one. (Although there is no purple nail polish, so it might be Moonlight Beach mixed with Manhattan Beach, red + blue = purple)
What's your favorite?
all pics via American Apparel