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Thunderbird 78.4.0 (64-bit) on Linux Kubuntu 18.04 | How to enable Dark Mode ?

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Dark Mode was introduced with the latest update.. https://www.thunderbird.net/en-GB/thunderbird/78.0/whatsnew/

a) How can I enable Dark Mode in Thunderbird 78.4.0 (64-bit) on Linux Kubuntu 18.04 ?

I am using Breeze Dark, so a dark system theme, however Thunderbird does not react. Where is the option/button to enable this manually in Thunderbird?

b) Did anyone think of the possibility that heaps of users might use a light OS theme while they would also enjoy having dark mode in certain apps?

Thank you for your help.

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Chosen solution

AFAIK there is no Qt theming support in Thunderbird (however, it works with GTK3). You can set the dark mode manually in the Add-ons Manager, just open the Preferences page, then select Extensions & Themes in the lower left corner, and finally choose Themes on the left side. Then you may choose among the Default, Dark and Light themes.

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Chosen Solution

AFAIK there is no Qt theming support in Thunderbird (however, it works with GTK3). You can set the dark mode manually in the Add-ons Manager, just open the Preferences page, then select Extensions & Themes in the lower left corner, and finally choose Themes on the left side. Then you may choose among the Default, Dark and Light themes.

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