Just to make it "clear" (pun intended), based on the 1965,66, 67 and 68 Ford Car Facts Books, ad the Salesman's List Pice Books for each year, the tinted back glass was Standard for all four years. In addition, for 1965 and 1966, the tinted (banded) Windshield was a stand alone Factory Option, and another Factory Option was with all glass tinted. For 1967 and 1968, the "Winshield Only" Option was not available ; it was either all glass tinted or none.
Also, for 1967 and 1968, under the "Air Conditioning" Option, there is a note saying "Tinted Glass Recommended".
Hope this helps.
Bob