That was indeed a very rare color Kenny, called "copper brown metallic" - I have only ever seen one other 1957 Chrysler 300C in all my years in that color.
I believe I recall where that photo came from, as it was in a Chrysler 300 Club monthly booklet (maybe 10 years ago now) wherein the original owner took the photo with his new wife at the time shortly after he bought the car. We will never know if she married him for the car or not though.
At the time of the publication of that booklet, he and his wife still owned the car.
Here also is a color chart with the color shown (not the clearest), but it is there - this is a color chart for all Chrysler models in 1957 but copper brown metallic (or poly depending on the supplier) was one of the colors for the 1957 300C:
View attachment 351323
Steve, I think your talking and I'm thinking about the long time owner of this Car that was a dominant Member in the western 300 club Merle W. Merle had driven that car cross country to Carlisle in 2010 or 2012 after a complete several year ground up, The Memory fades ah bit, But Beautiful "C" Had a chance to shake hands and break bread one nite, Jer
A collection of information regarding colors