KDE Plasma task switcher config file

Question

Thanks to this, I found how to change the Alt-Tab behaviour in KDE Plasma, but I want to go further and set this by default when installing an openSUSE Leap 15 with autoyast, then, I need to find in which file this config is written, anyone knows ?

From what I've found I've seen there is a ~/.config/plasma-org.kde.plasma.desktop-appletsrc config file but not sure I'm on the right way since I found nothing there or in any ~/.config/plasma* file.

Edit: as asked by Biswapriyo, the beheviour I want to change is the visualisation type (I changed from Breeze to Breeze Dark):

Task Switcher settings

Edit2: just found it (thanks to fswatch): it's stored in ~/.config/kwinrc.

Thanks