title: Can hex format be used with JSON files? If so, how?
body: <p>The following object is a valid one in plain Javascript. However, if the same is added to a JSON file, the file does not pass validation. Why is that?</p>
  
  <pre><code>var message = {
      "senderID": [ 0x01 ],
      "receiverID": [ 0xFF ],
      "commandCode": [ 0x00, 0x05 ],
      "payload": [ 0xFF ]
  }
  </code></pre>