# File lib/rouge/theme.rb, line 33
      def rendered_rules(&b)
        return enum_for(:rendered_rules) unless b
        yield "color: #{fg}" if fg
        yield "background-color: #{bg}" if bg
        yield "font-weight: bold" if self[:bold]
        yield "font-style: italic" if self[:italic]
        yield "text-decoration: underline" if self[:underline]

        (self[:rules] || []).each(&b)
      end