So back on track.
here is a link to the RCMP blue ,
https://www.google.ca/search?q=old+r...8xXG4gW2hVM%3A
they switched from Black with a white front doors in about 1973 to the blue with white front doors and that was used till the early 90's . Then switched to all white with the stripe package you see today.
The RCMP blue was a special color that was registered to the RCMP and not for public use.
GM had the pastel paints on Canadian trucks 69 to 71 and not on us trucks.