(1 photo of a 1983 Mustang GLX Promotional Sales Brochure) Page 4 and 5 of the 1983 Ford Mustang promotional brochure shows a Light Academy Blue Glow Blue Mustang GLX coupe. It says: The difference between just getting there... and really arriving. Ford Mustang GLX. Mustang GLX 3-door in optional Light Academy Blue Glow. Console. GLX bucket seats in optional blue leather.