Noia Fox theme 3.x.x is now a standalone theme (Firefox 29+) (*).
Noia Fox Options is an add-on that will give you the possibility to customize Noia Fox Theme.
* Options available :
- No border for toolbars (FF).
- Icons only for bookmarks toolbar (FF).
- Small icons for Navigation toolbar (FF)
- Classic Noia Fox square tabs (FF)
* About home skinned with Noia icons (FF).
* Fixes :
- Image toolbar add-on (FF).
For more options, you can install Classic Theme Restorer by Aris.
(*) Noia Fox theme link for Thunderbird.