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ColorfulTabs is a Firefox Extension.

You can download it from the developer’s website or the Firefox Add-Ons site.

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The ColorfulTabs extension adds a little “personality” to your tabs. It does so by assigning each tab a different color.

Let’s do a quick comparison.

First, we’ll open 4 tabs using the default Firefox setup:

 

 

Next, we’ll open those same 4 tabs…but this time with the ColorfulTabs extension installed:

 

 

As you can see, each individual tab is distinguishable from every other tab.

This extension provides one option for you to customize:

 

 

Clicking on the drop-down box will allow you to choose how strong you want the color of your tabs to be, with 0 being the darkest and 9 being the lightest.

***Note*** ColorfulTabs has known incompatibilities with the Tab Mix Plus extension. The developer of ColorfulTabs is working on the issue.