The reason there aren't a lot of pictures...is that it's really dark. We spent a lot of time in robotics training emphasizing this. The ISS arm has spotlights on the tip and on its steerable elbow cameras, and the steerable truss-mounted cameras have lights on them too (some of these lights are burned out, at least in the final STS program era). The crew had to use all these lights to illuminate the areas of interest if robotic ops were required at night.
Edit: As of Jan 16 it seems that many of the lights are still burned out and haven't been replaced.
But most of these lights have been in space for 10+ years and now the
majority of them are totally dead, while others are dimming.....If they continue to burn out, we'll eventually get priority because it will get to a point where we just can't do close-contact robotics at night without new lights, which could essentially double the time it would take us to do things.