code: function stylize(str, style) {
          if (colour.mode == 'console') {
              return consoleStyles[style][0] + str + consoleStyles[style][1];
          } else if (colour.mode == 'browser') {
              return browserStyles[style][0] + str + browserStyles[style][1];
          } else if (colour.mode == 'browser-css') {
              return cssStyles[style][0] + str + browserStyles[style][1];
          }
          return str+'';
      }
docs: Applies a style to a string.
  @param {string} str String to stylize
  @param {string} style Style to apply
  @returns {string}
  @private