The technidisc sunset shot looks great to me but… is this really the original look (as you say it is) and not a regrade applied for that release ?
Technicolor frames usually look more purple as Neverar matched the bluray to.
The techicolor print was struck long after the films initial release so it’s accurate but not the highlights or the extremities.
I would say even the sunset shot is still a bit yellow faded in the technidisc.