Missing theme options in TabBar?

Godot Version

4.4-beta1

Question

I’m creating a single theme for my project where I want to keep most buttons with the same aspect. I think I’m missing some option in the TaskBar panel customization that appear in the SpinBox category for (what i think) are the same kind of buttons.

In the SpinBox type I can see there are panels for the up and down buttons, regardless of the texture they may have for arrows.

But the TabBar type, doesn’t seems to have those. My guess is that these buttons, although do the same in different directions, don’t behave the same and therefor they are missing this panels?

Can someone tell me if I can find the option to customize this buttons anywhere?

you don’t use tabbar to customize a tab, you use tabcontainer.