The thing about the sky boxes that bothers me is that they skybox can have a bright light, but the side of a planet that is facing that bright light is dark because it is facing away from the sun, hence why I like the dark backdrops. I don't have a problem if you want to say that system is close to a nebula or something, but it would be nice if the light from that nebula would actually illuminate a bit. But they are nice, green is my least favorite.