You could throw together a greasemonkey script to do this in minutes.
- On DOM ready, add a preview div under the textarea.
- Bind to the textarea's change event, and have it update the preview div with the contents of the textarea.
- Add a [Random!] button next to [add comment]
- Bind to the [Random!] button to randomize the font, size, and colour of the preview div.
- On DOM ready, add a preview div under the textarea. - Bind to the textarea's change event, and have it update the preview div with the contents of the textarea. - Add a [Random!] button next to [add comment] - Bind to the [Random!] button to randomize the font, size, and colour of the preview div.
And with jQuery, that's probably 4 lines of code.