Works well on Debian Rated 4 out of 5 stars

Great theme... Thanks !!!
How can I modify your theme to close tab x to the right side ?

This review is for a previous version of the add-on (1.0). 

Hi, sorry for the late response, I was on vacation and after that I simply forgot about your question.

Well, you have to download the addon (don't install it), open the zip file, then edit chrome/browser/browser.css.
Once there, look for "/*tab-close-button on the left, tab-icon-image on the right*/", you have to change the -moz-box-ordinal-group order. Or simply comment it out (or even delete those few lines), because firefox default is "close" button on the right. Then save, update the zip file, and move it over the addons tab to install it.

If you have trouble doing that, I'll try to explain better. Cheers!