Out of all the Spring 2011 collections I'm most obsessed with Chanel Black Pearl. It is a stormy teal-tinged blackened base with threads of metallic silvered green running through it, topped off with green, blue, and teal micro-shimmer. It's gorgeous. I can get a full week out of this manicure with a little tip wear at the ends.
I also picked up Paradoxal which is a stunning shade of grayed plum with red and violet microshimmer. Beautiful!