I understand the trim code is 842a. Blue interior, bench seats. I'm trying to find the correct paint to redo my dash. Which is a nice light blue looking color. However, my SPIDs are gone. Completely. I cant seem to find the right dang paint!!!!!!!
Most of the old paint codes won't be in the newer paint systems to have it mixed up. Your best bet is to take off your glove box door, or another easily removable painted piece, and take it into a paint shop and have them use their scanners to determine the mixed color.
I was able to find a paint chip sheet on ebay for my 64 that helped with dialing in the exterior color. Had samples of each color on it. Have you looked for one of those? On the dash, I found that using the glove box door, removing the hinge and the paint under that was well protected for the decades. They had to add something called "flocking" to the paint to get the matte finish needed.