Interesting. Thanks!
The brochure in that Hemmings link lists "Dark Red with Burgundy" as the only red variant, but there's also a picture in the brochure that shows a #46 "Red" (could be "Orange" though - it's an old pic)) wagon next to a "Dark Red" 142.
<img src="https://www.dropbox.com/s/k9xsmur7bdq5cdy/Screen%20Shot%202020-08-06%20at%201.22.57%20PM.png?raw=1" width="1080px"/>
I did manage to lift this from an old eBay brochure listing. It shows Burgundy as a leather-only color, and Black vinyl at the only option for red 145's. No mention of carpet colors though:
<img src="https://www.dropbox.com/s/g2xglqg2glpk1ei/Screen%20Shot%202020-08-06%20at%2012.29.44%20PM.png?raw=1" width="1080px"/>