How to make the active tab MUCH more visible

[stefaanMLB]

I screwed up big time yesterday because of a simple confusion of which was the active tab in tabby.
How can I make the active tab much more visible ? I found #8133 and #6109 but the proposed solution isn't working for my version of tabby (1.0.223)
What custom CSS selector(s) should point to the TAB background.

[stefaanMLB]

Found it thanks to chatgpt and a lot of experimentation

tab-header.active {
  background-color: lightgrey !important;
  color: darkred! important;
  font-weight: bold;
}