Well, I think I did. Wheelman said his silver Coupe DeVille matched the fillers exactly. That silver would have been the production color 'Platinum Metallic' so I'll go with that. Close enough either way.
On a related subject, my '84 Cutlass has the same silver panels so it's probably a generic color. Although I didn't know how nice that silver could look! I mean you wouldn't think it would age, being under the trunk and all. But today I rubbing compounded the ones on the Cutlass and the difference was night and day. And that car has been garaged all it's life! It's like this film just builds up over time. You should try it.