I thought that KWin was more like the window manager and Plasma color themes are separate. Maybe I’m wrong.
I figured it was worth a try to backup my Plasma configs and nuke them from orbit. So I used this as my guide:
I logged into Gnome and ran these commands:
cd ~/
rm -rf .kde
rm -rf .cache/plasmashell*
rm -rf .cache/org.kde.dirmodel-qml.kcache
rm -rf .cache/kioexec/ .cache/krunner/ .cache/ksycoca5*
rm -rf .cache/krunnerbookmarkrunnerfirefoxdbfile.sqlite
rm -f .config/plasma*
rm -rf .config/kde*
cd .local/
rm -rf kate/ kded5/ klipper/ knewstuff3/ kscreen/ konsole/ kwalletd/ ksysguard/ kmail2/ kcookiejar/ kactivitymanagerd/
cd share/
rm -rf dolphin kate kcookiejar kded5 keyrings klipper kmail2 knewstuff3 konsole kscreen ksysguard kwalletd kxmlgui5 plasma_engine_comic plasma plasma_notes org.kde.gwenview
cd ~/.config/
rm -rf akonadi* KDE kconf_updaterc baloo* dolphinrc drkonqirc gwenviewrc kmail2rc k*rc katemetainfos
Here is what Dolphin looks like now:
I notice that there are other elements to my DE that remain unchanged, such as latte-dock and my top panel. So the guide I used to reset my KDE/Plasma configuration files to factory defaults didn’t work.