While privately communicating with another Forum member, searching for Santa Fe caboose historical information, I stumbled across this website. If ever there was a photographic case to be made when arguing over the "correct" color of a model, the old adage "A picture is worth a thousand words!" is spot-on for shortening the argument when viewing pages 43-47!...
Too bad more historical records don't have similar line-ups for other equipment, other railroads, eh what? You know, lines of diesel types, passenger car types, freight car types, etc., etc..
Add to that the 'Cataract Color Change Factor' among our aging optics, and, well...
Even the color quality of 1955 films can't be claimed as absolute. But the relative variations are readily apparent.
Just thought it was an interesting perspective to share...FWIW. (Not intended to be a fresh grenade on the topic, folks!)
KD