Rated 4 out of 5 stars

Integrates Firefox even better into the elementary theme (especially the tab button. That green thing from the ff gnoem theme always bugged me).
However some icons (for example the history icon [namely the places/folder-recent icon, which is also the recent files icon]) are not related to what they are and have better equivalents within the elementary icon set.
The panel styles still don't fuly match the panel style from elementary, but it's a lot better than it was earlier when I last used this theme.
As soon as australis reaches the main version I'll probably disable this theme, or fork it on github (if I can find it) and make it a pure icon theme, so I get the australis tabs.

This review is for a previous version of the add-on (2.7).  This user has a previous review of this add-on.

Cheers for the review.

Themes github @ https://github.com/zeeeeee/firefox-elementary