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Monterail Darkness Extended 1.0.7
Monterail Dark, a Thunderbird theme inspired by the mockup of Monterail extended to Calendar, Tasks and Composer. Some more tweaks to normalize heights of the tabs and other options.
About this Add-on
This is an experimental add-on. Use at your own risk. If you'd like to contribute, you can do at the original source add-on repository or else fork this repository. Have fun!