Об этом дополнении
Dark, clean and professional-looking browser interface, designed for when impressions matter in the office, workplace or elsewhere.
With light coloured menus, sidebars, etc for easy readability and a dark and silver interface for the SeaMonkey and Thunderbird * Email client.
This theme also fully styles all the features and new toolbar buttons, tab close buttons, etc to be found in the Sea Fox extension - https://addons.mozilla.org/en-US/seamonkey/addon/sea-fox/ The screenshots of this theme show many of the new Sea Fox buttons.
* From Version 22.214.171.124 onwards, this theme also completely styled the Thunderbird Email program.