I lit the roundels around the door in my console room, because they're the primary source of lighting. In the studio I imagine there was other lighting - I didn't want my console room to be dark over by the door.
During the Key to Time season (left), the doors had roundels, much like the walls. Later it looks like they were painted over to the wall colour. Rather than cut holes in my doors, I went for the later look. My console is slightly later than the Key to Time season anyway...
I was faced with the task of making the roundels round.
Emergency lighting? Or just fiddling with the gamma correction in the photo
It shows off the roundels nicely anyway.