Perhaps the answer is somehow do a petition to the commission for the tender-lettering of the engines. This would solve a lot of issues, and would be no extra work, since the engines are generally painted each year before the season.
I have been copying to digital old videos and have just today watched the 1991 Rotary and the 93 Rotary. The 93 rotary had 497 and 487 Rio Grande from the previous fall John Craft charters. Those tenders looked a little silvery in color, but looked very nice overall, and were painted I believe. Also the cabs were done nicely. In 1991 we got there two days before they ran the rotary and shot a break-in run with 487 and 488. They had their new coat of paint and C&TS with the herald on the tenders, but no numbers or lettering on the cabs, but two days later were done!!
Personally I would not be interested in sponsoring a trip, nor paying for a ticket with engines that had obvious metal or vinyl lettering.
Painting them Rio Grande once at the beginning of the season would then cause ZERO extra work during the year for potential RIO GRANDE charters, and would show the history at the same time to tourist riders.
Why the railroad fails to embrace its history in this way is beyond comprehension. I can think of a lot of operators who would love to operate authentic engines on the tracks and railroad they once ran on in regular service!!!
Russ's photos do look pretty bad!!! Best shoot photo specials from a distance. Maybe thats why the foreign guys do so!!!
Greg