Interesting paint question-85 GMC

[68c10owner]

My truck is/was originally Indian Bronze code 66. Its got 2 yellow pin strips that go front to back along the body line. They look some what original but I was told the truck was repainted. One thing I noticed is inside the fuel doors and in the door jams I see what looks like a older 2 tone with the dark and a tan with tan pin stripes. My glove box sticker doesnt show a 2 tone. The other thing is the driver door was replaced and its more of a copper color but inside the door jam on the door its self is the same dark color with the tan stripes. The guy I got it from said it was originally a light tan and it was painted the darker color but that doesnt jive with the glove box code and the fact that the interior metal is painted the same dark brown color. Anyone else come acoss something like this?