A very cleaned-up style for the User Interface only. Inspired by Material design, Outlook and Postbox. Affects the main-interface and the calendar/lightning add-on. Detailed description and comments inside the CSS. Please read the additional information here, or the one inside the code. Updated (1) 15.Dec.2015 - force white titlebar also with cuxtom visual styles.
Thunderbird tabs without curves and gradients
Dark theme for Thunderbirds main UI. If you have any issues with this style, please open a ticket at https://github.com/NiklasGollenstede/stylish
Really wanted a clean dark theme, but no good ones that I liked existed. Created this and realized how easy (and a bit of a pain) it was to make one. This includes a slightly modified Twister's Labels. Hope you enjoy!
Gets Thunderbird more fit with Windows 8 and Windows 10 looks - sharper tabs, fewer gradients. Customizable.
For people who use the awesome Numix Dark theme for Linux. This userstyle fixes Thunderbird's horrible appearance if you use Numix Dark. If you want to know what parts of Thunderbird are changed: Screenshots speak louder than words, so check them out.
A dark view of thnderbird conversation, for use with a dark theme On the screenshot, I also use accountColor
Display calendar a dark way for a use of a dark theme in thunderbird
This style makes Thunderbird tabs look like those in the FlatStudio GTK+ theme (without the rounded corner, as when tabs-2.css is selected in gtk.css). This is a direct port of my Firefox FlatStudio Tabs style.
Thunderbird Dark Blue theme This theme has been created for Ambiance Dark Blue theme from gnome-look.org created and tested on Thunderbird version 31.0. In new version add custom color for treechildren