Good morning folks, I'm hoping someone could tell me what the correct paint color for the interior on a 1940 1/2 pickup would be? Also wondering was the firewall the same color as the body on the two tone trucks or black? Was the gas tank goose neck painted the same color as the body or black? Original color of the truck was black, doing a color change to swift red & black. Trying to be period correct as possible. Thanks for all your help.