Black, gray and texture, shine. Try smoky mirrored or reflective furniture (or a mirror on the wall); a soft, low-pile rug; and a plush faux-fur throw. Shades of gray, black and white make easy partners for a brown leather sofa.
Love black and white pillows with a brown couch. Throw a printed teal pillow on your non leather chair and hang Sam/tyler pic in that room to tie in teal rug. Then add white tv console and switch out a few shelf items with some black and white items.