Allow global configuration of the foreground and background color of all visually rendered text content.
As part of satisfying provision one of this checkpoint, provide a configuration option to override foreground and background colors specified by the author or user agent defaults.
As part of satisfying provision one of this checkpoint, offer a range of colors to the user that includes at least:
the range offered by the conventional utility available in the operating environment that allows users to choose colors, or
if no such utility is available, the range of colors supported by the conventional APIs of the operating environment for specifying colors.