hairy_hen said:

I have no idea whether adding that much yellow to the image will also allow for maintaining realistic skin tones, since the source is so messed up, or if there's even enough colour depth left in it to work with at all

My fear is that the release source has been degraded/messed up past the point where you could get back to a point of presenting the startingly natural range of colour captured in Mikes screen photos. (This is why we people need 3D films today because films don't look as naturally rich, lifelike and non-digital as this anymore)