Qolor: Dynamic Theme Engine

Name: Qolor: Dynamic Theme Engine
Rating: 4.8889 (9 reviews)
Author: Raphael Quintão

By: Raphael Quintão Add-on

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

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Install

Features & Capabilities

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.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

2.0.1 Last updated: 2026-04-27

Version code:

6237307

Creation date:

2019-04-18

Risk:

Permissions:

theme
storage
unlimitedStorage
browserSettings
management

Size:

5.01MB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-15

Compare stats and ranking:

Ranking

# 30,998 ▲ 1,368

Other rankings

#105 in engine keyword 19 ▲ 5#243 in algorithm keyword 3 ▲ 7

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Raphael Quintão

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/qolor/

Website:

https://github.com/raphaelquintao/Qolor/issues

Is Qolor: Dynamic Theme Engine Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Qolor: Dynamic Theme Engine requires very minimum permissions.

Risk impact analysis details

Medium Manages other extensions, which allows oversight but might intervene with user configurations and choices.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Qolor: Dynamic Theme Engine is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******