The Neon Signs feature multi-colored, hand blown neon tubing. The glass tubes are supported by a black finished metal grid, which can be hung against a wall or window; they can even sit on a shelf. The Only in a Jeep neon sign has green and white neon. The Neon Signs have a warm mesmerizing glow, and are powered by industrial strength transformers, which operate silently and more efficiently than incandescent bulbs. All you do is hang it up and plug it in – no assembly or special wiring required. For indoor use only.