and also quite a few references to bicycle re-paint shops in California.
CycleArt in Santa Cruz was mentioned but their website is dead.
Joe's Bicycle Painting...in Watsonville - perhaps give them a call or email and explain you need the RAL for a cannery Bontrager - Deep Metallic Purple...
I really think that's the right route to the code....Santa Cruz is going have bike people who worked at the Cannery or know someone who did.....