Output colorization in Ruby

color_reference_code.txt

Code	Effect
0	Turn off all attributes
1	Set bright mode
4	Set underline mode
5	Set blink mode
7	Exchange foreground and background colors
8	Hide text (foreground color would be the same as background)
30	Black text
31	Red text
32	Green text
33	Yellow text
34	Blue text
35	Magenta text
36	Cyan text
37	White text
39	Default text color
40	Black background
41	Red background
42	Green background
43	Yellow background
44	Blue background
45	Magenta background
46	Cyan background
47	White background
49	Default background color

output_colorization.rb

def colorize(text, color_code)
  "\e[#{color_code}#{text}\e[0m"
end

def print_red(text)
  puts colorize(text, "31m")
end

print_read("panic!")