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
    triplet RGB (*r*\ /*g*\ /*b*, each in the range 0–255), by hue-saturation-value
    HSV (*h*\ -*s*\ -*v*, with ranges of 0-360, 0-1, 0-1), by cyan/magenta/yellow/black
    CMYK (*c*\ /*m*\ /*y*\ /*k*, each in the range 0-1), or by a hexadecimal color code
    (*#rrggbb*, as used in HTML). For a transparency effect, append
    @\ *transparency* in the 0–100 percent range [Default is 0 (opaque)]
    **Note**: Transparency effects are only visible when PDF or a raster
    graphics format is selected.  See :doc:`Explanation of color codes in
    GMT <gmtcolors>` for more information and a full list of color names.
