As stated in the main post, we used a 1956 print (which is not Thunderbean) as the main source for video. We could not use Thunderbean’s release because about a half of it has a severe color fading, but a very few scenes were replaced with it due to the lens switches the 1956 print has. Those scenes were color corrected to match the rest of the video and the fading was fixed.
TonyWDA has posted a great sample of how the lens switches look, and you’ll get immediately why we had to get rid of those:
https://originaltrilogy.com/post/id/1512017/action/topic#1512017