68 C10 original equipment questions

[Csbrock8811]

Hello,

I am in the planning stages of my build. I want to take the truck back to factory specifications. I have attached a picture of the options sticker found in my glove compartment. This leads me to my question. My question is what was the original color of the exterior of my truck? The option code says 4500AA - Black. My exterior is red/orange with some sort of black underneath (primer or OE paint) and my interior is black. Which is why I am sort of confused (is my 4500AA code for the interior color or exterior?).