Gets the currently used theme as a Theme object. The arguments available in the color object are listed in the properties of the color.

This is an asynchronous function that returns a Promise.


let getting = browser.theme.getCurrent(
  windowId    // integer


windowId Optional

integer. The ID of a window. If this is provided, the theme applied on that window will be provided. If it is omitted the theme applied on the last focused window will be provided.

Return value

A Promise. The promise will be fulfilled with a theme.Theme object representing the theme applied to the given window. If no extension-supplied theme has been applied to the given window, it will be fulfilled with an empty object.

Browser compatibility

BCD tables only load in the browser


Gets the properties frame and toolbar colors of the current theme

function getStyle(themeInfo) {
  if (themeInfo.colors) {
    console.log(`accent color: ${themeInfo.colors.frame}`);
    console.log(`toolbar: ${themeInfo.colors.toolbar}`);

async function getCurrentThemeInfo() {
  const themeInfo = await browser.theme.getCurrent();


Example extensions