 Williams'legacy extends to the very look of the RAAF. He personally chose the colour of the Air Force's winter uniform, a shade "somewhere between royal and navy blue", designed to distinguish it from the lighter Royal Air Force shade. Unique at the time among Commonwealth forces, the uniform was changed to an all-purpose middle blue suit in 1972 but following numerous complaints in the ensuing years reverted to Williams' original colour and style in 2000.
