I've never seen a tag with a paint code on any truck. The only paint codes were on the sticker on the bottom of the hood. I don't know what year they started using those. 71s didn't have them.
The pillars look to be a light green which may be the original color, meaning the other color may have been painted later and could be anything.
The cab is from a cleaner truck, that's what I'm wanting to paint to match the darker green, the pillars, rockers & back of cab. The dark green was original, the vin decal is still intact & you can see it's never been taped off.
It may be that brite green.