Paint codes found behind rear seat

I had the rear seat out the other day doing some work and found this. I've already decoded the fender tag so I knew the color codes, but it was kind of neat to see this inside the car. The nice part is the color codes do match the fender tag codes Y3 & Y6 I still haven't found the build sheet yet though. It's fun to find all the little "tricks" they did on the assembly line in those days. I'm still hoping to find a build sheet though it's not looking to good so far, I've checked both seats and found no trace of one.

HPIM5478.jpg