Lumar button

The Lumar buttons are buttons added by RedLogic that glow in 16 different colors (see below). If the player presses them, the buttons emit a short redstone signals. With the Screwdriver, a crouching player can switch between following modes:
 * Default: If the button is activated, the light goes out.
 * Inverted: If the the button is activated, the light turns on.
 * Always on: The light is always on.