How do you control the indirect colour bouncing on a coloured studio set? [Lumen]

Hello,

I am assembling a sequence, where a character dances on a blue studio backdrop (Infinite plane with a gradient).

The character used has some gold reflective materials on the legs, which reflect the blue backdrop quite strongly. So, a lot of blue tones are visible in the gold reflections.

Is there a way to control this at all?

I am using Lumen, and a studio HDRI for the general lighting.

I have tried to add a different coloured plane with some hidden elements, but this doesn’t seem to work. I’ve also used the post process to try and control things, but still not making any difference.

Has anyone got any ideas?