Simple module for colour output to the terminal.

color-output.rb

module ColorOutput
  RED = 31
  GREEN = 32
  YELLOW = 33
  BLUE = 34
  MAGENTA = 35
  CYAN = 36
  
  def self.wrap(s, start_code, end_code = nil)
    end_code = start_code - (start_code % 10) + 9 if end_code.nil?
    "\x1b[#{start_code}m#{s}\x1b[#{end_code}m"
  end
  
  def self.bold(s)
    wrap(s, 1, 22)
  end
end

puts ColorOutput.wrap("Warning! Uh... something's going wrong... don't know what though.", ColorOutput::RED)