Rated 3 out of 5 stars
Version 3.0 is a big improvement, but in the Compose window it colors the "From" field and miniaturizes the text in the field. This extension needs more work.This review is for a previous version of the add-on (3.1). This user has other reviews of this add-on.
This was fixed in Version 3.2. The latest version is 3.3 which is compatible with Thunderbird 3.1.