Just like Corona light mix, There should be an option like ability to add Colorselect render element and then add multiple Corona color map to generate different color scheme.
I’m moving this to resolved feature requests board, since we have multiple similar requests already.
https://forum.corona-renderer.com/ Material passes in VFB lightmix stylee?
https://forum.corona-renderer.com/ Environment - multiple maps (Lightmix) - Mapselection for Renderelements