You have several choices to make, either return everything, and search for clean original stuff, or doll out big coin for NOS, or spray dye the assorted panels so that everything matches the soft components like the seats, headliner, carpet, etc, etc, or just assemble everything as received...me personally I like everything tweaked so that it matches, not so much that it looks like a spray bomb went off inside the car, you need some colour/sheen/texture contrast so that it looks "natural" and not contrived...if you decide to dye the assorted components to match up, go with either SEM or PPG interior dye custom matched, and sprayed with a gun, not a can...SEM offers several topcoats in clear, low luster, satin gloss, gloss, I recommend a clear topcoat (if using SEM) to aid in colour retention, and ease of cleaning, and stain/scuff prevention, the low lustre clear coat is very natural looking, has no visible sheen when applied correctly, and does not alter the colour

Mike