Minty Green.

(Pants; David Lerner; Sweater, J.Crew; Shirt, J.Crew; Watch, Coach; Jewelry, Tiffany, Crewcuts (see a cool minty green version of necklace here); Shoes, Vince Camuto similar here; Purse, Zara; Sunnies, Selima for J.Crew)

I wrote a post about the color mint around this time last year, but based on it's consistent popularity over the past year, I think it is becoming less of a fad and more of a staple. It's subtle enough to layer with other colors but is a bit more interesting than a more neutral option.