I call this my "steampunk room" - we were inspired by old English libraries, but we wanted a more contemporary edge, so we went with a teal instead of bottle green. In lamplight, the room reads very green instead of teal.
Colors used in my room:
Benjamin Moore "Dragonfly", natural accents (gold and brass), mahogany, charcoal gray (couch fabric)
Tips for using color successfully:
Don't fight a room's natural tendencies! Painting a dark room in a light color will just make it look dim. Instead, choose a vibrant color to make a dark room feel like a cozy jewelbox.