Firstly I would use a application that had a Levels control and remove any color cast caused by the stage lighting. Then there are applications that provide simulated ‘color filters’ or ‘photo filters’ or ‘color overlays’ that you can then use to overlay.
I had a part-time job in a senior school where one of my duties was to photograph the school play. The changes in lighting was a nightmare. I always shot raw and at reduced exposure, around 2/3 to 1 stop, to compensate for the usually dark background caused by spotlights. Adjusting the white balance after the shoot for each individual lighting phase brought most images back to life but not all.