I know some 70 Cougars had a houndstooth roof/seat insert package available. I knew about the Mustang package as well but I haven't seen one in many years.
A friend of mine used to own a 70 Grande with a saddle-colored vinyl roof (probably leather texture, I can't remember - it may have even been a half-roof) and the molding at the base of the vinyl roof looked like a tooled leather belt.