What is this shim for- 66 Door

Bright Red or Dark Red metallic?
Bright red- non metallic.
It was interesting how the stripe was the same color as the interior. Back in 66” the cars came with the fender tag marked for the stripe like my car but it was painted at the dealership. I wonder how many cars left dealer without the stripe? After working at a few dealerships in my day... dealers typically added the sport stuff like a stripe because the same car could appeal to multiple buyers not just the person wanting a racing stripe.