Custom Sky Texture's

As I understand it, each sim is basically a box unto itself. I could be way off on this, my assumption comes from flying as high as I possibly could (hundreds of millions meters high) and noticing the outline of the sky in a box formation.

My suggestion would be a new command for 'Sim' owners to change the texture of the sky, allowing for space settings or just different sky settings. This might be weird for mainland sims, but Island sims would be most usefull...

An island wants to pretend to be mars, set up a marsian sky. Want a romantic meteor shower, bam you got one...Just think it might be a nice little option to have...