# File lib/rouge/lexers/css.rb, line 148
      def self.constants
        @constants ||= Set.new %w(
          indigo gold firebrick indianred yellow darkolivegreen
          darkseagreen mediumvioletred mediumorchid chartreuse
          mediumslateblue black springgreen crimson lightsalmon brown
          turquoise olivedrab cyan silver skyblue gray darkturquoise
          goldenrod darkgreen darkviolet darkgray lightpink teal
          darkmagenta lightgoldenrodyellow lavender yellowgreen thistle
          violet navy orchid blue ghostwhite honeydew cornflowerblue
          darkblue darkkhaki mediumpurple cornsilk red bisque slategray
          darkcyan khaki wheat deepskyblue darkred steelblue aliceblue
          gainsboro mediumturquoise floralwhite coral purple lightgrey
          lightcyan darksalmon beige azure lightsteelblue oldlace
          greenyellow royalblue lightseagreen mistyrose sienna lightcoral
          orangered navajowhite lime palegreen burlywood seashell
          mediumspringgreen fuchsia papayawhip blanchedalmond peru
          aquamarine white darkslategray ivory dodgerblue lemonchiffon
          chocolate orange forestgreen slateblue olive mintcream
          antiquewhite darkorange cadetblue moccasin limegreen saddlebrown
          darkslateblue lightskyblue deeppink plum aqua darkgoldenrod
          maroon sandybrown magenta tan rosybrown pink lightblue
          palevioletred mediumseagreen dimgray powderblue seagreen snow
          mediumblue midnightblue paleturquoise palegoldenrod whitesmoke
          darkorchid salmon lightslategray lawngreen lightgreen tomato
          hotpink lightyellow lavenderblush linen mediumaquamarine green
          blueviolet peachpuff
        )
      end