LXQt - Manjaro
https://wiki.manjaro.org/index.php/LXQt/enThe window title bars are drawn onto your screen by the window manager you use. The default window manager of LXQt is Openbox. To configure OpenBox, open the "LXQt Configuration Center" and select "Openbox Settings". Then select the same theme you choose in Kvantum. GTK Theming. LXQt now provides an easy way to set the themes for GTK2 and GTK3 ...