My immediate question to this is, "Why?".

that would be actually cool the less of the planets health remains- the "darker it becomes" like some highlights go out..

no prob + there was a post that suggested the idea for sins2 for the devs to make different cities (maybe city lights) for different races.. that would be nice! so vassari would  have like red lights- their titans have allot of red "lights"... advent possibly some kind of more geometric lightning to the planets...