to Coney Island–Stillwell Avenue in Brooklyn, while the part-time B became the part-time Brighton Express service, formerly served by the express <Q> (notated with a diamond). Table of service label use This is a table of when each service has existed (and been signed for the public). Shuttles were SS until 1985, when they became S (which had been used for specials). Various colors were used for shuttles in 1967; in 1968 all six became green, and in 1979 all shuttles became dark gray. References Further reading The Best Subway Map in Years, New York Times July 1, 1979 page E20 External links NYCsubway.org - Historical Maps NYCsubway.org - Post-War to Today NYCsubway.org - FAQ: The Letter, Number and Color Codes of the New York Subways Line by Line History New York City Subway