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theme - Mozilla | MDN
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theme
Enables browser extensions to get details of the browser's theme and update the theme.
You can use this API to include a theme in your extension, which you define as a theme.Theme and apply using theme.update(). You cannot include a static theme in your extension, defined with the "theme" manifest key. The "theme" manifest key is used to define static themes only. See Themes on Extension Workshop for more information.
Types
theme.Theme-
Represents the content of a theme.
Functions
theme.getCurrent()-
Gets the current browser theme.
theme.update()-
Updates the browser's theme.
theme.reset()-
Removes any theme updates made in a call to
theme.update().
Events
theme.onUpdated-
Fired when the browser theme changes.
Example extensions
Browser compatibility
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