Abstract: A contrasting dining surface has a first area configured to receive a serving of food thereon. The first area of the dining surface has a light appearance. The dining surface further comprises a second area configured to receive a serving of food thereon. The second area of the dining surface has a dark appearance. The first area and the second area contrast with each other.

Abstract: An improved system for lighting a floor area in a building. A plurality of lighting fixtures mounted in a ceiling structure for lighting the floor area are connected in one or more branch circuits. Each branch circuit is defined by a plurality of plural conductor branch circuit cables which distribute power to the fixtures. Each cable connects in series or parallel to both the next cable and the next fixture in the branch circuit. Circuit connections are easily modified for changing power distribution and switching needs by selective insertion of adapters between two series connected cables or between a cable and a connected fixture. Adapters provide for switching circuits and for converting circuit connections.