I have been operating under the assumption that the interior and exterior golds are basically the same color with different sheen. Perhaps this is a bad assumption.
On my metallic beige '65, the (fully original) interior and exterior paints weren't the same.
I bought a page out of the PPG Ditzler book for the 1965 colors. The AA-1 has a definite taupe look to it which I hope is not correct because I really don't care for it.
1. I hope you didn't pay too much; the info's free at autocolorlibrary.com
2. Paint chips can differ hugely from actual color on the car.
I did find the original interior gold paint under the ash tray bezel. Since I had to drill out the rivets, I think it must be un-faded original paint. I've matched this to a paint code of BH used on 1999 Lincoln Continentals.
Unless you're working on a '99 Lincoln, if you found paint under rivets installed at the factory and never removed since the car was built, it's not '99 Lincoln paint. If you use '99 Lincoln paint, the appearance will not be original. You may like it or prefer it, and that's totally up to you, but '99 Lincoln paint is not a match to the original.