    # File lib/compass/sass_extensions/functions/gradient_support.rb, line 32
        def to_s(options = self.options)
          s = self.class.color_to_s(color)
          if stop
            s << " "
            if stop.unitless?
              s << stop.times(Sass::Script::Number.new(100, ["%"])).inspect
            else
              s << stop.inspect
            end
          end
          s
        end