rear floor mats for 69 cat with dark nugget/saddle interior. iowa Stillinwoods@ gmail.con
You are looking for chocolate brown, very dark. The good news is that they are not cougar specific and were used for a lot of years. Here is a link to a brown set we sold a few weeks ago.
I have a pair of rears in dark brown. But, I don’t know if they are originals. have to check.