The wiki still has documentation for the initial ear style (#3F23D8) but nothing for 1.2.0.

Yes, this is mentioned in the changelog.

The new format is a bit too complex for reasonably short documentation, so I've been working on a "skin manipulator" to do it:

It's not quite done yet.

Aye, fair enough then. Good luck with your tool!

YAYS. I can't wait for the tool, this is quite complex right now.