Eco

Eco is a substance that spawned from alitronium after Doomsday. Eco is divided into six different types: Light, Dark, Green, Blue, Red & Yellow.

Polar opposites
On a wheel, eco would be arranged going clockwise: Light Eco, Green Eco, Yellow Eco, Dark Eco, Red Eco & Blue Eco. Light & Dark Eco would be on the opposite ends of the circle as they are the poles of the eco spectrum.

Use
Eco can be used in weaponry as a gun was created called the Eco Transistor. It contained six cartridges, all filled with different colors of eco. The ammunition or mods were light, dark, green, blue, red & yellow.