I have edited my original posting as I found what I was looking for in the KOFCI Handbook and body colors and trim options. My 51 Kaiser 2 door sedan is 140 onyx with 2407 trim (Explorer Gray Stockholm and Volta). I think I know what the Volta is but not the Stockholm. Can some one enlighten me? The headliner is in bad faded condition that appears somewhat tan but I can see gray in some areas so presume it was originally gray. Just wondering if it is the same material as the door panels which is a smooth gray material (if I am looking at the original). The seats are not original and in a light grey smooth material. I presume they were originally explorer gray Volta? Regards, Harry Hathhorn