Rated 4 out of 5 stars

Nice but 2 things:
-Glas tabs 6 inverted would be cool ( so that only the active tab is white).
-Haves problems with Status-4-Evar -> the green progresbar is turns to a light green bar.

This review is for a previous version of the add-on (1.2.6.1-signed). 

I can add a new "Glass tabs v6 inverted" entry on next update.

The light green progress bar is not a bug, but a feature.

If you have Stylish installed, you can simply override it by using this code:

#urlbar-progress-alt{
opacity: 1.0 !important;
}