On my other thread in the bug forum
Link
Codecritter gave the location of the nebula backgrounds.
I am playing 1.12.009 Beta
I think some of the secret is the amount of the Ambient light setting in the Game Options control. I set it dark to about 15, then shadow detail hits the turning ships. More Alien or Bab 5 than Star Trek.
I like slow battles, makes the bob and weave look less weird and I like the new fleet formations of the example mod.
I put those into the base game folder under fleet formations and it seems to work just fine.