The code didn't tell the assemblers anything about what color, or if it was a stripe deletion, or if it was going to receive a show finsh, it was just a code to clue the FISHER paint line that there were special paint requirments for this car. The actual requirements were on a peice of paper that accompanied the car, or were on hand at the paint booth. The - or - and a number at the bottom of the tag were indicative of an FSO (fleet or Special Order) number.
I believe that is what I said or at least was trying to say but just in a much more condensed version.
I will have to respectfully disagree with you Mark.
I fully believe that the " - - " was used for stripe changes and/or deletion as well as special colors. This would give everyone (Fisher or GM) a heads up to look at the buildsheet to verify color/stripe/whatever change.