Spaced Ranger said:

Those "secondaries" you mentioned are YCM (Yellow, Cyan, Magenta -- the inverse of RGB)? I cringe at approaching the film fade problem with anything besides RGB (Red, Green, Blue), which is why I try to stay away from HSL (Hue, Saturation, Lightness) or variant HSV (Hue, Saturation, Value), or the other spectrum segmentation/augmentation tools (I fear such corrections will produce the Hollywood cringe-worthy, visually broken Blu-ray releases we've seen of late ... right GL?). Just a personal research approach.

Can you list numbers for settings, which might be available in a paint program, for your nice green shirt correction? Alternately, could you reproduce it on the LUT-capture frame-strip (above) to see the effect of that cartoon correction on the live action sections?

BTW, awesome looking cel! I suggest the next archive and/or distribution medium incorporate vector frame-reproduction video!!

I didn't save my settings, but you can get there by adjusting the curves separately for the Red, Green and Blue channels. It ends up with a very wriggly top end to the curves to bring that colour mix to fruition.