Hi Darren, as John said, there were no records like that kept back then. Color Code M = Blue/Green or Sales Name Gulfstream Blue. In a exterior color usage survey conducted 12/2009 by Alan Tast, Past VTCI President, and present VTCI Technical Director, that color show up only 1.35% in the survey, making it one of the more rare colors. Bill Van Ess is a member of this Forum, so if he sees this, he might be able to tell you more. As for posting pix of your Tbird, the Welcome I posted for you when you joined tells you the ways you can do that. Here is the link to it.