technically there was really NO inside body color other than maybe overspray.....with that said there are stories and the existence of "some" cars that were 'say" brown like yours but a totally different color on the inside say blue, or maroon....reason being that particular car was next up and was a change in color so the sprayer cleared his gun of one color inside the car before he started spraying the new color on the outside. That's my .02 cents!!!