We have this beautiful red set-up through the shin-kickers and through the dress. The contrast enters through the steel-colored lighting at the top of the image.

Yeah, this one is a little tough, but the contrast is all of the white-ish colored beams of light throughout the image.

Just as a generalization:

We have this nice mixed palette of color setup here. Then it gets this great contrast through the beams of light coming from SR and SL.

We have this nice and even white front light and then we get this contrasting "rim light" coming from the subject's right.

We have a nice cool palette of white and a white-ish blue set up in the image. Then we get this nice contrasting purple, which gives the image some "pop."