Something like this is a distinct possibility in terms of the Lighting we can see in the film set. But there are no lights directly behind the camera.
I’m willing to concede that the flood light is Cyan and lighting the Corridor punching through the Red Lights making them look pink.
I don’t know if this is acceptable as you will argue that if you apply the settings I used here to another shot will mean that it can not be possible and by logic that this one is wrong because another shot will look the wrong color.
I think you need to accept that some shots in the film no matter what reel they are in depending on who filmed it are totally up the spout. That’s not an attack or anything A reel of film is assembled from many different camera shots and some of those a few particular offenders are wrong no matter what version of the film you watch.
But I am willing to concede that it could be Cyan from the floodlight no more than this as it is not possible any other way.
In all honestly If you apply the same logic to the Jumpsuits of the Rebel Pilots some of them are bright pink in the Original film no doubt in your Technicolor print too. So that means they put Luke in a Pink flight suit for Kicks for a few shots or they thought they would randomly swap the color of the costumes about for a laugh or something. I think you need to just accept it’s got issues with it and perhaps resolving them or reproducing them is a one way or the other approach.
I don’t know what the purpose is really or the point it’s either Green walls or not Green walls there does not seem to be any rhyme or reason to accepting anything else but I’ll try and provide you with this alternative which no doubt you will reject.
Old Floodlights were always a very Cyan white so this would make sense it’s clearly a floodlight too.
I would say there is a similar Floodlight the other end of the corridor providing the light on the front face of the panels.
This is the only other option in my eyes. But even then it would not be that Cyan either and the floodlight has no Gel in it.