The red is a refraction effect. It is a lumanent sphere set within a transparent globe. It's designed so that no matter where the camera angle is, it appears a red smoke within the globe. I do plan to make a set for each element, but that won't be for a while yet. The reason that I chose red is based on the circle of power-'Fire beats water beats earth beats fire...', as a subtle point of irony,(fire encased in water)' but I think I'll make mats for each element.