# File lib/diffy/format.rb, line 4
    def color
      map do |line|
        case line
        when /^(---|\+\+\+|\\\\)/
          "\033[90m#{line.chomp}\033[0m"
        when /^\+/
          "\033[32m#{line.chomp}\033[0m"
        when /^-/
          "\033[31m#{line.chomp}\033[0m"
        when /^@@/
          "\033[36m#{line.chomp}\033[0m"
        else
          line.chomp
        end
      end.join("\n") + "\n"
    end