Inverted Lamp (RedPower 2)

The Inverted Lamp is a type of block from RedPower 2. It emits light at luminance level 15 as long as it is not provided a redstone signal. There is a lamp for all of the base 16 colors within Minecraft; however, they do not emit colored light. RedPower 2 also adds an inverted version which emits light only when it has a redstone signal.