# TST Mark Tabs

> Manually color tabs in Tree Style Tab's sidebar.

Canonical page: [https://chrome-stats.com/d/tst-mark-tabs](https://chrome-stats.com/d/tst-mark-tabs)

## Overview

- **ID:** `tst-mark-tabs`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Lej77
- **Category:** appearance,tabs
- **Daily users:** 39
- **Weekly downloads:** 1
- **Rating:** 4.50 / 5 (2 ratings)
- **Version:** 1.1
- **Last updated:** 2025-03-28
- **First published:** 2019-05-09
- **Size:** 82 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tst-mark-tabs/)
- **Website:** [https://github.com/Lej77/tst-mark-tabs/issues](https://github.com/Lej77/tst-mark-tabs/issues)

## Description

⚠ This addon extends and works only with <a href="https://addons.mozilla.org/firefox/addon/tree-style-tab/" rel="nofollow">Tree Style Tab</a>.

This extension adds a context menu item on tabs that can be used to set their background color. This color will be visible in Tree Style Tab's sidebar.

Alternative addons:
<ul><li><a title="[TST] Colorize Tabs" href="https://addons.mozilla.org/firefox/addon/tst-colorize-tabs/" rel="nofollow">[TST] Colorize Tabs</a> works in a similar way to this addon.</li><li><a title="TST Colored Tabs" href="https://addons.mozilla.org/firefox/addon/tst-colored-tabs/" rel="nofollow">TST Colored Tabs</a> sets tab colors based on the domain of their loaded page.</li><li><a title="Sidebery" href="https://addons.mozilla.org/firefox/addon/sidebery/" rel="nofollow">Sidebery</a> is an alternative to Tree Style Tab that provides manually colored tabs by itself without 3rd party helper addons. This addon took inspiration from it and offers the same colors as version 5.2.0 of Sidebery which was released at 7th March 2024.</li></ul>
Permissions:
"sessions": needed to save colors as tab specific data so that it remains when tabs are restored after a browser restart.

## Rankings

- #18,115 — Overall

## Permissions and access

### Permissions

- `storage`
- `sessions`
- `menus`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/tst-mark-tabs)