As I mentioned, GMC colors are different than Chevy. While Chevy used only Forester Green as a standard color [on edit] forgot Chevy's optional Seacrest Green [/edit], GMC had 4 different greens in 1948.
If you want to go with one of the original GMC colors, here are the codes. But like Rich said, it's your truck. Pick whatever color you like.
Apple Green - Martin Senour #115 (striping color on earlier Chevys)
Brewster Green - Martin Senour #111 (Chevy stopped using that before 1948)
Morat Green - Martin Senour #98L-1015
Narva Green - Martin Senour #98L-1013
Last edited by klhansen; 10/13/2026 5:56 PM. Reason: oops forgot Chevy's second green
