As far as planned color scheme, I was at a loss until I came across some this pic of the London Museum of Natural History:
I felt like the dark grey floors accented by worn brass, with mottled tan and grey walls, and amber lighting (I keep tossing around the idea to install LEDs) will convey the interior of an Imperial starship perfectly. I'm looking to get started on the project this weekend. What I need to do beforehand is make a greenstuff mold of the floor details so I can make some Zone Mortalis bases for my Blood Ravens and Delaque Pirates.
In other news I've started airbrushing miniatures. I've been practicing on turning some BfM Tactical Marines into Blood Ravens following Lester Bursley's great tutorial here:
I've been through 5 marines now (thank goodness for purple power cleaner) and can't seem to get that nice rich red tone he does. Mine always come out this rusty looking brown color. I figure I just need more practice, so I'll keep trying. I also tried some Sky Raiders Corsairs following Nigel Bartlett's awesome formula and got more or less the same result as my blood ravens.
Anyway, stuff in progress more to come, and hopefully some good photos soon!