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

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Examples

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

const suntheme = {
 images: {
   theme_frame: 'sun.jpg',
 },
 colors: {
   frame: '#CF723F',
   tab_background_text: '#111',
 }
};

browser.theme.update(suntheme);

Set the theme for just the currently focused window:

const day = {
    images: {
      theme_frame: 'sun.jpg',
    },
    colors: {
      frame: '#CF723F',
      tab_background_text: '#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

• dynamic-theme
• private-browsing-theme