Woody,
Graphite Brown Metallic might be the color that J.D. is looking for, but I do not think that color was used for all Advance-Design years.
There were at least 3 different interior colors during the Advance-Design years: 1947-1949, 1950-1953, and 1954-55st (see below).
The 1954/55 Advance-Design trucks had Pearl Beige or Pulsar Gray as the standard and deluxe interior colors (in addition, 4 two-tone interior options were available late 1954 and 55-12st series Advance-Design trucks).
Tim
