[Feature] Add highlight for new tabs in background

[lightonflux]

When you open tabs in the background you have no idea if it was successful, as the theme does not highlight the right arrow like Firefox official theme.

Animate or highlight the right arrow. Like the official theme.

How to test:
Use Ctrl+LMB multiple times until there is no space for new tabs. After that new tabs in the tab bar flow over and open without any visual cue.

[rafaelmardojai]

I don't totally understand the problem. When I use Ctrl+LMB and the tabs overflow the tabsbar also scrolls to the newly open tab.

[lightonflux]

It looks like this in my firefox. The second half of the video, i am still opening tabs in the background. But it does not scroll. In the settings i have "open tabs in foreground" disabled. So maybe you need to use ctrl+shift+LMB?

Bildschirmaufzeichnung.vom.2023-12-01.00-00-17.webm

[rafaelmardojai]

Hmm, I can reproduce it now, but only if the current active tab at the beginning of the visible tabbar. If in the middle it animates.

I guess the arrow highlight you mention from the official theme has been overridden by this theme, I will try to bring it back.

[draunger]

Assign

[rafaelmardojai]

@draunger are you willing to work on this?

[draunger]

@draunger are you willing to work on this?

I will do