Using Refinements to monkey patch String class

string_refinement.rb

module StringColorize
  refine String do
    def red
      color_code = 31
      "\e[#{color_code}m#{self}\e[0m"
    end
    
    def blue
      color_code = 34
      "\e[#{color_code}m#{self}\e[0m"
    end

    def pink
      color_code = 35
      "\e[#{color_code}m#{self}\e[0m"
    end
  end
end

# color methods wont be available here
require "pry"; binding.pry
#puts "This should be red".red

using StringColorize
# now the colorize methods will be available
puts "This should be red".red
puts "This should be red".blue
require "pry"; binding.pry