Paint line between interior and exterior color?

Hey! I recently bought a 1973 Dart that has been through several color changes over the years and I'm looking to restore it to its original color listed in the fender tag. That would be JA5 - Dark Silver Metallic on the exterior and GB5 - Bright Blue Metallic on the interior. I was wondering where does the color switch happen from the exterior color to the interior color. So I have a few questions regarding that:
Is the line the door seal? or the interior color only on the upper and lower portion of the door on the interior?
Is the dash also painted the listed interior color?

I tried to find pictures online but most examples have the same exterior color as they do interior, and it's hard to find pictures of the door jamb specifically.

Thanks in advance for help.