“YEARBOOK (detail — Randi B.)"
I couldn't find much information about these photos. Here is my guess to what I think is happening. They're using one gel colour for the background, and 3.0 lighting. It's very obvious that they're not using any gel colour on the subject. There has been some interesting cropping out on both the photos above.
The photo above is quite a difficult one for me to write about. I'm going to have a go anyways.
What I think is happening is that the photographer may have used a very neutral gel colour on the background and subject. The photographer may have used a very light gold gel on the subject of the photo. It's looking very contrasty and goldy.