code: function(string, color) {
        return "\u001B[" + {
         bold    : 1,
         black   : 30,
         red     : 31,
         green   : 32,
         yellow  : 33,
         blue    : 34,
         magenta : 35,
         cyan    : 36,
         white   : 37
        }[color] + 'm' + string + "\u001B[0m"
      }
docs: Return ANSI-escaped colored string.
  
  @param  {string} string
  @param  {string} color
  @return {string}
  @api public