Comment by nixpulvis

I still get a real kick out of Ruby's elegant and powerful metaprogramming, which is something other languages don't often compare to.

    class String

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

The general advice is to avoid confusing others though, so changing base classes like this is not really a business-safe idea.