/**
@page working_with_colors Working with Colors

Throughout libxlsxwriter colors are specified using a Html style RGB
integer value. For example with a Format object:

@code
    format_set_font_color(format, 0x3030E0);
@endcode

For convenience a limited number of color names are supported:

@code
    format_set_font_color(format, LXW_COLOR_RED);
@endcode

The color names and corresponding RRGGBB value are shown below:


  Color    | Define                | Value
  -------- | --------------------- | ------------------
  Black    | #LXW_COLOR_BLACK      | `0x1000000` (note)
  Blue     | #LXW_COLOR_BLUE       | `0x0000FF`
  Brown    | #LXW_COLOR_BROWN      | `0x800000`
  Cyan     | #LXW_COLOR_CYAN       | `0x00FFFF`
  Gray     | #LXW_COLOR_GRAY       | `0x808080`
  Green    | #LXW_COLOR_GREEN      | `0x008000`
  Lime     | #LXW_COLOR_LIME       | `0x00FF00`
  Magenta  | #LXW_COLOR_MAGENTA    | `0xFF00FF`
  Navy     | #LXW_COLOR_NAVY       | `0x000080`
  Orange   | #LXW_COLOR_ORANGE     | `0xFF6600`
  Pink     | #LXW_COLOR_PINK       | `0xFF00FF`
  Purple   | #LXW_COLOR_PURPLE     | `0x800080`
  Red      | #LXW_COLOR_RED        | `0xFF0000`
  Silver   | #LXW_COLOR_SILVER     | `0xC0C0C0`
  White    | #LXW_COLOR_WHITE      | `0xFFFFFF`
  Yellow   | #LXW_COLOR_YELLOW     | `0xFFFF00`


@note Black in Html is actually `0x000000` but `#LXW_COLOR_BLACK` is defined
as 0x1000000 to avoid confusion with an undefined or Zero color value. It is
converted to the correct Html code internally.

Next: @ref working_with_dates

*/
