This is a bg slightly tweaked in Flash to add some gradations for depth. We could get one person to do the Maya bgs and one person to tweak it in Flash. The beauty of this is that any bg we generate is renderable from any angle with the ability to tweak colors, textures and even scalability as well.

Here's a reverse angle with the same small amount of gradation added. Of course we can also change colors at this stage if needed.

Here's a quick comp of the characters with the bg.

A reverse angle with the characters.