R2-D2 is not Cyan
And if a photo like that is really Cyan and green it’s not really reliable. But it is now a better indicator once you remove all the color that absolutely should not be there.
It’s also brighter because the smoke machine is not on. It’s clearly not the same take as in the film and the light is dimmer in the film.
Make the walls green if you want I don’t mind. but would it have been green when it was first struck and made very much doubt it. It’s probably gone green.
Things like that to me are just not worth the time of day. But I guess it’s fun if you want to watch a simulation of an old faded print add some dirt and flek and grime.
There is a very definite problem with fluctuating color hues at least at the end of the film. Not sure about this part the lights Red anyway.