povides beautifull folder icons for icon themes that don' t have so nice ones. This theme should be used together with the flat-glass-Color icon theme https://kde.store.org/p/1328321/ to witch it points.
Also in the extracted icon-theme there is a file "index.theme".
In this file you find:
You can add other themes behind "flat-glass-Color" or replace it by another icon theme. As a result this ultrflatOrangeLichteDskp theme will get missing icons from that place.