I really like this idea for an office or a library. Convert an old globe into a pendant light! Seems easy enough. Buy a lamp kit at your local hardware store, take apart a globe and drill a larger hole for the light. Put remainder of light together.
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.