I don't think shifting the hue helps the overall color - some colors are helped, others are harmed.

Color correction can be better achieved with a program like AviSynth.

Actually, I did some fooling around with that Luke/Ben picture in AviSynth, it took several layers of ColorBalance and the newer version of Tweak for the 2.6 alpha - the version with the startHue and endHue variables. Then I did some extra tweaking in Picture Manager. Here's what I got out of it:

I was trying to match the warm, muted look of this picture Mike Verta took from that private IB Technicolor print screening he attended:

When I turned up the saturation on the Verta picture and on my final correction of the Technidisc, Luke's skin comes out looking a similar hue of orange on both. Luke does have a more orange complexion than Ben, and Ben's lips do look kind of purple. Not sure how much of this is due to the color shifting I had to do, but you can also make out similar color relationships in this Senator screenshot:

Unfortunately, once again my settings only worked for this one image.