The answer is no for now, but once graphic overhaul is out the door, I think we can come up with a few LUA commands to take control of the skybox texture and geometry (and shader constant pass-in values)
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PC SPECS: Windows 8.1 Pro 64-bit, Intel Core i7-5930K (PASSMARK:13645), NVIDIA Geforce GTX 980 GPU (PASSMARK:9762) , 32GB RAM