Rated 4 out of 5 stars

I can't really decide between my two favorite Thunderbird themes:

Crossover X and OxyBird, but for now I'm using OxyBird (could switch back and forth), it's much more aesthetically pleasing than the default Thunderbird theme.

Wish I could learn more about Oxygen's icon set, their website is kind of limited on info!

GOOD CHOICE!

This review is for a previous version of the add-on (1.3).