SilverWook said:

Recent photo of a corridor at LAX. ... Bonus points if you know what 1980 movie also shot here. ;)

I hate hard questions! Can I cheat (w/ StartPage.com searches)? :D

EDIT (after cross-posting):
Okay, let me think.
Think. Think. Think.
Is it ... "Ariplane"?

AntcuFaalb said:

... I have nothing like "color" and "tint" capture-side ... so I might as well make use of the extra headroom and save this headache for post-production.

Considering the info on analogue processes of TV, I tested my imagined correlation to a digital equivalent for your colorbar capture. Looks like it was right ... with the "hue wheel".

Your posted colorbar is shown here with my color separation strips (B&W w each's color as a border) superimposed. The paint program has a Hue/Saturation/Lightness adjuster with a color wheel that turns a full 360° to shift the hue of the spectrum.

At it's default settings of "no adjustment", each separation strip should have uniform intensity of areas where it is "on". But, here, Red and Green vary somewhat and Blue varies significantly.

To test this approach, I arbitrarily chose a -5° spectrum shift. The R-G-B separations showed worse variation. Success! :D

Now, going in the opposite direction for spectrum shift, this time +5° from the default position, Red and Green variations all but disappeared! Blue improved but still varied:

Testing further (+10°), to try for Blue improvement, resulted in everything pushed too far -- creating worse uniformity for all R-G-B. Trying an additional shift of just the Blue part of the spectrum (from a drop-down menu selecting degree-range pre-sets) was ineffective. I'll try more testing along that line for improvement in Blue (maybe manually setting more effective degree-range endpoints?).