oxygen-gtk-demo

Port of the default KDE widget theme (Oxygen) to GTK2

Arch Arch Linux
RUN pacman -S --noconfirm oxygen-gtk2
CentOS
RUN yum install -y oxygen-gtk2
Fedora
RUN dnf install -y oxygen-gtk2
click the source code to copy install oxygen-gtk-demo on any operating system with command-not-found.com