I am afraid my camera skills are sorely lacking (though hopefully improving). I did use as much extra light as I had at hand (three desk lamps perched on chairs or clamped to a bookcase), but we had a dull and cloudy weekend down here in Melbourne so my preferred natural light option wasn't available. It will be easier to film when I get around to adding proper layout lighting.
I tried to make the signal shots as interesting as possible, but they don't show up all that well in the video. For example, the two home signals protecting the platforms are three aspect and quite busy in the shot, but their yellow state is barely detectable by the camera. I use a multiplexed driver chip to power them so yellow is actually rapidly alternating green and red flashes which works well for the human eye, but the camera shows this a slightly flickering reddish-orange. I can see them changing in the video, but I doubt most viewers would notice.