I took the advice to check the 'spleen, and what I found there is extremely interesting. I’m amazed hardly anyone here is talking about it: anyone even slightly interested in colour timing should download this immediately. The difference between the home video releases and the 35mm version of The Matrix is STAGGERING.
I’m still trying to wrap my head around what this looks like, and why the difference is so drastic. The only explanation that makes any sense to me is that this represents a very early version, and that the filmmakers must have changed their minds about its appearance before much time had passed. Other prints probably did have the familiar green that everyone remembers (albeit more subtle than the video releases have made it); but this one, at least, isn’t even close to that. It really has to be seen to be believed.
Check out various screenshots here: http://imgur.com/a/LcuQo