Pantone named Emerald Green, the color of the year for 2013, but I say any green will do. I just painted our den/study "Eclispe" by Sherwin Williams. It's a rich, olive green similar to the color in this Elle Decor magazine photo.
I love the fact that it blends so well with shades of blue/green, red, orange, black or turquoise. It just might be the perfect color. It's stormy and brooding yet calming and classic. Interesting how what's on the walls can really color your world.