There is one thing you can do. You can use a material called real starfield or something like that. It used to be available here as a free down load. It maps a starfield to a huge sphere in which all of you objects sit. This is independent of the sky settings and will not effect lighting or color. It also creates a much nicer sky than the built in starfield preset. I have created my own as well and I think I can mail it to you if you wish.