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Despite the fact that the theme was created for Xfce4, the icons successfully combined with other desktop environments of Linux.
There are two variants of icons: Oranchelo and Oranchelo-green. The difference between them in a color icons of directories. In Oranchelo-green they are green.
Installation latest version into Linux Mint:
udo add-apt-repository ppa:oranchelo/oranchelo-icon-theme sudo apt update sudo apt install oranchelo-icon-theme