1965-66 Paint code key
 

To read the original thread and discussion on this topic go here- LINK


once you find the code, here's the key:

Also note that you'll only have one number on the trim tag. For instance solid light blue is 507. I believe that a white top/insert (if you had the side trim) would be a 537 (shown on the second pic only - a 1966 chip, but same logic applied).Attachment 874252

Re: Paint code
 

You can find the paint code on the tag which is driver's side just to the side of the fresh air vent

http://67-72chevytrucks.com/gallery/...3/100_0287.jpg