I've done some searching and found a couple of photos of the bridge lights (hopefully the link works). If you look at this pic and the next one in the set, you'll see that the main lighting is in that center part as I suspected, most likely changed based on the camera angle. I don't think those coloured extra bits add any lighting. I don't know where the light source for the meshy bit over the turbolift door comes from.
If I were lighting that set, I'd probably add spotlights to match those approximate positions, then use final gather to sort out the rest. You may not want to go with a realistic final gather setup though if you want to keep that clean diagram type look though, plus your render times would be significantly longer.