Yup, armrest bases molded in color for base Bel/RR coupe interior.
Funny thing is my '68 base interior RR had the polished stainless trim panel retainer moldings, had its original interior. Amusing because it probably cost Chrysler more to have painted ones in the 3 different colors than to run the stainless in all.
So, it looks like the painted retainer moldings were a '69 deal, unless my car was an anomaly - 9/30/67 St Louis car - but that's a topic for a separate thread.
None of my base trim coupes had the exterior B-pillar stainless center molding, but all of my Decor coupes did.