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Preview of Qolor: Dynamic Theme Engine

Qolor: Dynamic Theme Engine by Raphael Quintão

Build perfect, harmonious Firefox themes using a cutting-edge OKLCH colour engine.

4.9 (9 reviews)
11 Users
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About this extension
Qolor is a dynamic, smart theme engine that generates modern, high-quality Firefox themes. It uses the cutting-edge OKLCH color space. This makes every combination look and feel perceptually perfect.

Features
  • Total UI Coverage: Most tools only change the toolbar. Qolor styles everything—popups, sidebars, menus, and interactive button states—for a truly seamless look.
  • OKLCH Color Space: The OKLCK color space allows Qolor to create harmonious palettes that maintain consistent lightness and saturation, ensuring every element is visually balanced.
  • Intelligent Shades: Smart algorithms automatically adjust shades for optimal contrast and readability.
  • Always With You: Full seamless integration with Firefox Sync.
  • Open Source: Fully open source and free to use, with the source code available on GitHub. Contributions and feedback are welcome!

A modern, advanced alternative to Firefox Color for users who want total UI coverage and automated contrast control.
Rated 4.9 by 9 reviewers

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Permissions and data

Required permissions:

  • Read and modify browser settings
  • Monitor extension usage and manage themes

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Version
2.0.1
Size
5.01 MB
Last updated
a month ago (Apr 27, 2026)
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