A dynamic theme that allows colouring Firefox in a Vivaldi style fashion.

VivaldiFox promo image
What is VivaldiFox?

VivaldiFox is an innovative Firefox add-on that provides a dynamic theme creation similar to Vivaldi. It enables users to integrate with page colours, set night themes, and works efficiently with Tree Style Tab and Tab Center Redux. Despite minor text shadow issues on Firefox 59 or lower (which can be fixed via userChrome.css), this add-on enhances browser appearance and functionality.

Stats date:
Users: 725 ▲ 1
Rating: 4.73 (270)
Version: 3.6 (Last updated: 2022-10-30)
Creation date: 2016-06-13
Weekly download count: 52
Firefox on Android: No
Manifest version: 2
  • theme
  • tabs
  • storage
  • alarms
  • browserSettings
Size: 87.66K
URLs: Website
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

This dynamic theme provides the following features:

  • Custom theme creation like in Vivaldi
  • Integration with page colours
  • Ability to set night theme

Works along:

  • Tree Style Tab
  • Tab Center Redux with "Integrate with current theme" setting.

Important information

  • On Firefox 59 or lower, a text shadow will sometimes appear. This has been fixed in Firefox 60, I recommend upgrading if you're still on an older version, but you can also use userChrome.css to fix this, the code is here.
  • This add-on is only focused on providing VivaldiFox style tab coloring. For features like tab stacking, I recommend Tree Style Tab
  • Please report issues here


User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Works perfectly
  • Dynamic tab color change
  • Ability to change color options from the settings
  • Can change theme
  • User-friendly interface
  • Developer responsiveness is poor
  • Incompatibility with system dark mode
Most mentioned
  • Dynamic tab color change
  • Developer responsiveness
  • Compatibility with Vivaldi
  • Ability to change color options
View all user reviews
Risk impact

VivaldiFox may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.

Risk likelihood

VivaldiFox has earned a fairly good reputation and likely can be trusted.

Upgrade to see risk analysis details