SmallringFX Dark works on Linux too! Rated 5 out of 5 stars

Marvelous theme and it works on LINUX too!
Simply follow the normal procedure, without caring about "Not available for your platform" advice
:- Continue to Download- Press on Accept and Install
- Please note: This add-on is not compatible with your operating system:press on * Install for Windows anyway.
Installed on Linux Firefox version 3.6.10

This review is for a previous version of the add-on (0.921).  This user has a previous review of this add-on.