Yeah, my website has them in HD res basically.

http://savestarwars.com/technicoloribscreening.html

It is not that the pics have to be matched exactly, because they aren't totally accurate, the contrast and exposure and tinting is slightly off because they are just screen photographs. But they give you a rough idea to guide you, which is one reason why I wanted to create the page here. They are pretty accurate in terms of saturation, though.

And yeah, at least with ESB you can't just port over the exact same settings, although the settings for the other films should not be radically different. There is a consistent method in that you just increase the saturation, shift it cyan, and dial down the reds. SW requires some brightness and contrast increase because it is so dim, but I don't think ESB require much or any, though I haven't taken a second go at ESB.