Create a monochromatic color scheme by bringing in all of the varying hues of green throughout the space. Throw a few decorative pillows in a lime green design on a dark green couch for a modern touch. Paint your walls a sage green for a peaceful setting. Hang up photographs of budding leaves for a nature feel to the space. Start a theme collection of frogs, lizards, snakes or grasshoppers in your decor choices for whimsy.
The opposite hue of green on the color wheel is red. Paint the walls a dark red to make a dark green couch stand out. The space does not have to look like Christmas if done carefully. Bring in other dark green furniture and create throw pillows for all of them featuring deep red roses. Hang drapery featuring a dark green and dark red pattern, such as stripes. Add other warm earth tones, such as oranges and yellows in accessories.
Keep the feeling of your living room calm by bringing in other cool tones. Blues and purples are on the same side of the color wheel as green is. Hang up a painting of a deep blue sky on top of the green hills in Ireland. Take photos of tree leaves in your backyard against the sky. Place a bouquet of purple lilies in a clear crystal vase on your mantle or side table. Fill a fish tank with blue, green and purple rocks and buy fish of the same hue.
Decorate a room with any style of a dark green couch in a minimalist design to make it appear up-to-date. Pair it with white to make it appear lighter visually or black to make it take on an even darker tone. Bring in a white wicker chair, with a dark green cushion and distressed coffee table for a modern country feel to the room. Bring in black wrought iron pieces, topped with glass, for a contemporary start to the space. Use few decorative accessories, such as a candelabra on the coffee table or simple white ceramic lamps on the end tables, to complete the look.