Add-ons

theme.update()

Updates the browser theme according to the content of given Theme object.

Syntax

browser.theme.update(
  windowId,    // integer
  theme        // object
)

Parameters

windowId Optional
integer. The ID of a window. If this is provided, the theme is applied only to that window. If it is omitted the theme is applied to all windows.
theme
object. A Theme object specifying values for the UI elements you want to modify.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic support No No55 No No
windowId No No57 No No

Examples

Sets the browser theme to use a sun graphic with complementary background color:

const suntheme = {
 images: {
   headerURL: 'sun.jpg',
 },
 colors: {
   accentcolor: '#CF723F',
   textcolor: '#111',
 }
};

browser.theme.update(suntheme);

Set the theme for just the currently focused window:

const day = {
    images: {
      headerURL: 'sun.jpg',
    },
    colors: {
      accentcolor: '#CF723F',
      textcolor: '#111',
    }
};

browser.menus.create({
  id: "set-theme",
  title: "set theme",
  contexts: ["all"]
});

async function updateThemeForCurrentWindow() {
  let currentWindow = await browser.windows.getLastFocused();
  browser.theme.update(currentWindow.id, day);
}

browser.menus.onClicked.addListener(updateThemeForCurrentWindow);

Example extensions

Document Tags and Contributors

 Contributors to this page: ntim, wbamberg, rebloor
 Last updated by: ntim,