Improve unsightly border around pinned tabs with dark themes

[ArrJay]

Pinned tabs with dark themes are currently ugly. The border should be removed or made a less jarring color. The new design is gorgeous; let’s get pinned tabs to match!

[oviniciusfeitosa]

Sure! I noticed the same thing. It was very ugly. How to reverse this?

[reggi]

Not a fan. They also feel bigger. The spacing and borders around normal tabs is fine. Let’s get rid of this monstrosity please!

[Heclalava]

I disabled the following flag:

After relaunch my pinned tabs no longer have that unsightly border around them:

However this has made no difference at all for the vertical pinned tabs. Still trying to find a solution.
I also changed these two flags as well:

Flags can be accessed here: brave://flags/