class Rouge::Theme::Style

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