Don't think I've ever seen a factory two tone 2 door sedan in first generation. I've seen non factory 2 door two tones with the paint break line at the fender peaks (hood and trunk lid painted the top color). The factory would have ended the top color at the bottom of the 'A' and 'C' pillars. 'B' pillars would be lower body color.
Interesting cowl tag. What is the 50 at the bottom? Is it five oh or five dee?