Ilya Furman

[
 [ 'warn',  '\x1b[35m' ],
 [ 'error', '\x1b[31m' ],
 [ 'log',   '\x1b[2m'  ]
].forEach(function(pair) {
  var method = pair[0], reset = '\x1b[0m', color = '\x1b[36m' + pair[1];
  console[method] = console[method].bind(console, color, method.toUpperCase(), reset);
});