![](https://addons.mozilla.org/user-media/addon_icons/2757/2757717-64.png?modified=134f61a5)
theme-color polyfill
Adds meta theme-color support to Firefox in the form of changing the active tab color.
![](https://addons.mozilla.org/user-media/previews/thumbs/271/271038.jpg?modified=1656958919)
What is theme-color polyfill?
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.
Add-on stats
By: Марко Кажић
Users: 1
Rating: 5.00
(4)
Creation date: 2022-07-02
Weekly download count: 1
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
- activeTab
- webNavigation
- theme
- <all_urls>
Size: 32.05K
Ranking
Other platforms
Not available on Chrome
Not available on Edge
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Add-on summary
This extension will scan pages in your tabs to find if they set a theme-color
meta tag, and paint the browser frame in that color, much like some mobile browsers would. This extension might be useful for developers trying to debug theme-color behaviour in their websites and apps.
User reviews
by Andreas, 2022-07-05
by Radmila, 2022-07-05
by Милош, 2022-07-04
Add-on safety
Risk impact
theme-color polyfill is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install theme-color polyfill if you trust the publisher.
Risk likelihood
theme-color polyfill has earned a fairly good reputation and likely can be trusted.
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