What color of green should I use in my great room?

I'm not sure what color to put on this wall in my great room. It has a very open floor plan and from the living room you can see everything in the kitchen. It has a high vaulted ceiling and all the walls in the great room are going to be Pittsburgh Paints Camel (beige, not too dark). We have a dark brick fireplace on the wall you see when you walk in the door. We would like to paint this wall green. I cannot decide between P.P. Dill or P.P.Birch Forest. Our couch is a forest green color (it's one of those big recliner couches with soft fabric)(we plan on getting new furniture soon..but not RIGHT away). The kitchen is going to be painted P.P. Canyon Stone. I'm just really scared what color of green to paint the wall with the dark fireplace. It has dark brown, light brown, dark brick red (very few), and tan bricks on it. Any suggestions? This is our first home and we are a young family so I don't want it to look too childish..you know?