Started with the Monogram kit . As I wrote in my WIP the car was not always the same color . Research shows it was at times black , purple , maroon and gray . I saw an episode where Wally tells Beaver they painted the car gray . Found the picture you will see and although black and white it sure looks like a dull gray to me . And that is the photo I used as my guide . Simple Tamiya primer body . Never found any info on interior color and photos I found show it sometimes a light color and sometimes a dark color . I chose a brown Krylon Short Cuts color . Trim is Molotow pen . Aluminum tail pipes .