What does Containers Theme do?

Containers Theme focuses on keeping Firefox's visual theme aligned with the active container color. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Containers Theme?

Containers Theme is an open-source project built for firefox users who use container-based browsing.

What platforms does Containers Theme run on?

Containers Theme runs on the web and embeddable surfaces.

Is Containers Theme still active?

Unverified. Containers Theme has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Containers Theme?

Similar projects tracked by PulseGate include Sean Hugo / containers-theme, Firefox Container Color Toolbar, and Colorize Container Toolbar.

Who makes Containers Theme?

Containers Theme is developed by Jonathan Kingston.

How long has Containers Theme been around?

Containers Theme first shipped in 2017.

Back to the index

Containers Theme

Name: Containers Theme
Author: Jonathan Kingston

github.comInfrastructure

Containers Theme is an open-source Firefox extension that changes the browser theme to match the color of the active container. It is intended for Firefox users who organize browsing sessions with container tabs.

Open SourceWebEmbeddable

Visit github.com

Overview

3 features

In the Browser DevTools & extensions space, Containers Theme takes a focused approach. It focuses on keeping Firefox's visual theme aligned with the active container color. It is built as an open-source project for firefox users who use container-based browsing. Containers Theme is open source under the Open Source license. It ships for the web and embeddable surfaces.

Jonathan Kingston builds and maintains Containers Theme, and it first shipped in 2017. Among its 3 catalogued features are container color matching, browser theme changes, and firefox integration.

Summary written by a language model from the project’s public pages.

Container color matching
Browser theme changes
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed11 Sep · 08:38 UTC
Containers Theme verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Containers Theme

What does Containers Theme do?: Containers Theme focuses on keeping Firefox's visual theme aligned with the active container color. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Containers Theme?: Containers Theme is an open-source project built for firefox users who use container-based browsing.
Is Containers Theme free?: Yes — Containers Theme is open source under the Open Source license and free to use.
What platforms does Containers Theme run on?: Containers Theme runs on the web and embeddable surfaces.
Is Containers Theme still active?: Unverified. Containers Theme has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Containers Theme?: Similar projects tracked by PulseGate include Sean Hugo / containers-theme, Firefox Container Color Toolbar, and Colorize Container Toolbar.Sean Hugo / containers-theme Firefox Container Color Toolbar Colorize Container Toolbar
Who makes Containers Theme?: Containers Theme is developed by Jonathan Kingston.
How long has Containers Theme been around?: Containers Theme first shipped in 2017.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 11 Sep 2026
Built for: Firefox users who use container-based browsing
Model: Open source
Solves: Keeping Firefox's visual theme aligned with the active container color.

Registered as

Firefox Add-ons: containers-theme

Developer

Jonathan Kingston

Index record

Indexed: 11 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 11 Sep 2026

Identity audit (13)

Slug: containers-theme-github-com
Lifecycle state recorded: 11 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 11 Sep 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 11 Sep 2026
Canonical URL: https://github.com/jonathanKingston/containers-theme

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do