Monkey patch to add `.red`/`.green`/`.yellow` to the String class to color strings on console output

colorize_string_monkey_patch.rb

class String
  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
end

https://stackoverflow.com/questions/1489183/colorized-ruby-output