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[Help] How to i get rid of the purple in qt5?
(feddit.de)
Submit screenshots of all your *NIX desktops, themes, and nifty configurations, or submit anything else that will make themers happy. Maybe a server running on an Amiga, or a Thinkpad signed by Bjarne Stroustrup? Show the world how pretty your computer can be!
I don't know Arch or your DE, but purple is your OS's accent color. perhaps the issue is not in qt5 but somewhere else like /usr/share/themes, ~/.themes or ~/.local/share/themes.