Option to export and import templates

[Axenide]

Hi, I love this extension and for my setup I modified the palette and theme templates. The thing is that I'd like to be able to export those modifications so that I can reproduce them in other computer, something like exporting Sidebery's settings as JSON. That or having something accessible through prefs.js and being able to write that config in my user.js

Edit: Also, it would be great to be able to choose from which file it loads the colors, so people can use other generators like Wallust or Matugen and load their templates, sorry for adding this to this issue, I don't think it is necessary to open another one right now. :)