In a attempt to make a sky dome for AS, I came up with a cone instead. It works and could be very useful to anyone that needs a sky that doesn't end if the camera is rotated.
Open and adjust the size. to change the backgrounds just edit and replace the sphere1_auv.tga
It is only a obj cone with the inside mapped with a uv texture. It works surprisingly well if you are moving the camera with small movements under the cone but large rotations on the same plane.