Rated 5 out of 5 stars

Dark themes tend to be the preference for those of us who write code in a cave. This one works well for Thunderbird as it keeps the light background for emails, which is better for those sent by the majority who don't think about such things.

The use of orange and light brown tones is nice on the eyes... :)

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