I thought about a postprocessing shader, too. Unfortunately I'm not familiar with shader programming.

So if someone is interested in accepting this challenge please contact me. I for myself do this experiments not for one of my own Projects. Just to ceck what is possible with the A7 and provide this knowledge to the community. I'd glad if someone wants to join my research.

I made my glasses myself. All you need are two colour filter gels which cost about $1 each.