browserSettings.overrideContentColorScheme
A
BrowserSetting
object whose underlying value is a string.
Firefox enables users to choose a theme for the browser UI. These themes apply either a light or dark theme to webpages. Using the
layout.css.prefers-color-scheme.content-override
preference, users can override the theme and choose to render webpages in a light or dark theme or follow the device's theme. This browser setting exposes that preference.
This object takes these values:
-
"light": Applies a light theme to webpages.
-
"dark": Applies a dark theme to webpages.
-
"system": Applies a light or dark theme to webpages based on the device's theme.
-
"browser": Applies a light or dark theme to webpages based on the browser's theme.
BCD tables only load in the browser
This example overrides the setting to use the dark theme for webpages:
function logResult(result) {
console.log(`Setting was modified: ${result}`);
}
browser.browserSettings.overrideContentColorScheme.set({value: "dark"}).
then(logResult);
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