Tom~
I can only find a Sun Beige in 1956. There are two mfg codes for it. They are 56-T, and 56-W. I can't pull up a formula with a modern day code, though. My chip book for the '50s is currently MIA. I searched and searched, to no avail. Is Sun Beige the original color for your truck? Or was it repainted later on with that color?

~Jenny

"Custom can't be bought. It's achieved one cut at a time."

1950 Chevrolet 3100 1/2-Ton