Containers is a nice experimental add-on from Mozilla allowing to segregating tabs by context (called "container" ; ex: I don't want my shopping tabs to communicate cookies from other tabs).
When a tab is open for a given container, it will be displayed with the color of the container. It is so for the classic tabs, but also for the "Tab Center" add-on. It would be nice to have such distinctive display in Tab Tree.
The color for a container is assigned using a CSS variable. I don't know how it would be possible to retrieve this attribute in Tab Tree. Maybe Tab Tree and Tab Center are architectured diffently, making it difficult to get the info.
Containers is a nice experimental add-on from Mozilla allowing to segregating tabs by context (called "container" ; ex: I don't want my shopping tabs to communicate cookies from other tabs). When a tab is open for a given container, it will be displayed with the color of the container. It is so for the classic tabs, but also for the "Tab Center" add-on. It would be nice to have such distinctive display in Tab Tree.
Some research: