Roger Simonsz, camera operator and second unit DP on the Wing Commander Movie, presented at the Showlight conference in 2005. His experienced have been summarized in a brochure (PDF, page 6) posted at the Showlight website. He specifically commented on the use of color lighting and how it worked with the Kilrathi.
One key point that Roger made in his talk was that - cinematic and tv lighting directors have the power to decide on the colour palette of the piece and to share that with the audience. He recounted his experience of working on the film 'Wing Commander' where the LD decided that the good guys would be lit in blue, battle scenes would be lit in red, and the aliens would be lit in ... you guessed it green.
Roger spent two days filming in the green light and explained that contrary to what he'd been taught that green is a calming colour, he had found that he'd become more agitated the longer he'd spent immersed in green light only. LD's spend a lot of time looking at light and its effects but seldom spend time immersed in it.