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# How to Dynamically Change the Theme Color in Firefox
- URL: https://en.blog.themarfa.name/how-to-dynamically-change-the-theme-color-in-firefox/
- Published: 2025-12-18T07:23:08.000Z
- Updated: 2025-12-18T07:23:08.000Z
- Description: A Firefox extension adjusts the browser’s theme color to match the website, allowing you to customize contrast, blending, and exclusions.
- Author: Konstantin Dokuchaev
- Tags: Firefox, Ambient Theme by Site Colour

I like it when the color of the current window matches the rest of the environment. Usually, system colors depend on the desktop wallpaper — but the browser’s color can also be adapted to the website itself.

[**Ambient Theme by Site Colour**](https://addons.mozilla.org/en-US/firefox/addon/ambient-theme-by-site-colour/) adapts Firefox’s color scheme to the currently open site.

![](https://storage.ghost.io/c/31/c7/31c7da9c-f519-464c-9a3b-2d4144b557a6/content/images/2025/12/image-15.png)

All you need to do is install the extension, but if necessary, you can tweak a few settings:

- Disable the extension for a specific website;
- Adjust the contrast;
- Change the level of blending between the default panel color and the site’s theme.

[Try Ambient Theme by Site Colour](https://addons.mozilla.org/en-US/firefox/addon/ambient-theme-by-site-colour/)