Specifying Color
~~~~~~~~~~~~~~~~

*color*
    The *color* of lines, areas and patterns can be specified by a valid
    color name, by a gray shade (in the range 0-255), by a decimal color
    code (r/g/b, each in range 0-255; h-s-v, ranges 0-360, 0-1, 0-1; or
    c/m/y/k, each in range 0-1), or by a hexadecimal color code
    (#rrggbb, as used in HTML). For transparency, append
    @\ *transparency* in the 0-100 percent range [0 or opaque]
    (Only visible when PDF or raster format output is selected.).
    See :doc:`gmtcolors` for more information and a full list of color
    names.