As colors were not tracked prior to 1970, you will not even find the percentage of 67's that came in a specific color. Unless new factory info surfaces or is published, I do not believe you will be able to find colors from before the 1970 model year.
It's probably not possible to accurately reproduce a window sticker until you find the dealer it was shipped to. The IBM cards for 67 do show the dealer. The IBM card for your car may be available from Chrysler Historical. Even IF you find the dealer number, then you will have to find a list of dealers from 1967 and cross reference the number on the IBM card to the dealer list. THEN, you will have to research window stickers from that year and from about the same time as your car was sold as prices changed during the year. Strongly consider the effort required to accurately reproduce and the rationale for going through the effort. sometimes, not having either is better, and cheaper, than having an inaccurate piece of paper. It may raise questions you do not want raised.
Production numbers for 67 R/Ts have been published in aggregate meaning you can find the number of total 67 Coronet R/T in both HT and convertible configuration reported together but not broken out. For example, you'll find numbers that show 1,355 440-4 speed R/Ts but that number is not broken out into how many were HTs and how many were convertibles.