# theme-color polyfill

> Adds meta theme-color support to Firefox in the form of changing the active tab color.

Canonical page: [https://chrome-stats.com/d/theme-color-polyfill](https://chrome-stats.com/d/theme-color-polyfill)

## Overview

- **ID:** `theme-color-polyfill`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Марко Кажић
- **Category:** appearance,tabs
- **Daily users:** 4
- **Rating:** 4.80 / 5 (5 ratings)
- **Version:** 0.0.4
- **Last updated:** 2022-07-03
- **First published:** 2022-07-02
- **Size:** 31 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/theme-color-polyfill/)

## Description

theme-color polyfill is a Firefox browser extension that allows you to scan pages in your tabs for the theme-color meta tag, enabling you to paint the browser frame in that color. It is a useful tool for developers looking to debug theme-color behavior in their websites and apps.

## Rankings

- #46,260 — Overall

## Permissions and access

### Permissions

- `activeTab`
- `webNavigation`
- `theme`
- `<all_urls>`

### Content script matches

- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/theme-color-polyfill)