still not positive about driveshaft as mine is soaking in EvapoRust but other build sheet colors as referenced by user with same car less the ac are DB, TN LG.
Mine seems to have either red or pink in it as well as blue and green. Both the green and blue seem to be like grabber colors.
Is the other car from same plant and time of year? Not unusual for paint marks to change two or three times during a year
The base stripes to identify the drivelines during the 60's and early 70's in general were three stripes with other marks and colors applied for other reasons.
Looking at the Cougar R code automatic buildsheet I've got a copy of lists the drive line as
LBDBDG - Light Blue, Dark Blue, Dark Green
I do see red and pinks on other non CJ Cougar drivelines. - of course we hope that your driveline is original to the car and not one that replaced the original