Wire Bulb

The Wire Bulb is a light source that has multiple colors. It is purchased from the Mechanic for. Each corner can be lit up by wires. Each color of wire lights up a different corner. As there are four wire colors, there are four corners with four separate colors. The Wire Bulb can be placed in midair, without the need for support.

Trivia

 * The Wire Bulb is unique in that it has more states than any other block.