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Rubyでコンソールに色つきで出力

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class String
  # colorization
  def colorize(color_code)
    "\e[#{color_code}m#{self}\e[0m"
  end

  def red
    colorize(31)
  end

  def green
    colorize(32)
  end

  def yellow
    colorize(33)
  end

  def pink
    colorize(35)
  end
end

puts "赤色で出力".red
puts "黄色で出力".yellow

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