Tab Container color

Hi ,
let's say I have a tab container .
I want the active tab to have this blue color
image
I have tried to find an attribute under the tabstyle->active to set that to blue without success.
if I set the boarder color , it will look like the following

my question is , what sets this dark gray color above the blue boarder ?
(in case you are wondering why it is dark gray , it is because I am using another theme than light)

thanks in advance

In a browser, press F12, and then use the element picker. You can then see what styles are applied to that element.


In the top left corner, is the element picker tool. I clicked on an active tab. Examining the styles shows that IA are using box-shadow to get that grey bar.

Hit F12 on your browser to open Developer Tools.
Use the Inspect button to highlight the tab.
Somewhere in the Styles window you'll see something like this:

.ia_tabContainerComponent__tab--modern--active {
    font-weight: 500;
    color: var(--neutral-90);
    box-shadow: inset 0 -3px var(--border);
}

It's the var(--border) definition that's adding that.

The inspection gives the clue that we need to disable box-shadow.
Try these settings:

tabStyle.active.borderColor : --<your theme color variable>
tabStyle.active.borderWidth : 2 <or whatever>
tabStyle.active.boxShadow : none