In my opinion, both your side panel and my interior looks like it is the pearl sample I got, but again, all my paperwork says parchment. Even Geoff's link at the top shows no option for pearl in 1968. Is the literature and other documentation wrong somehow?
68' Firebird 400 convertible, numbers matching, solar red w/ deluxe parchment interior. 66' Pontiac Ventura Hardtop 66' Pontiac Catalina Convertible