Gnome Shell 主题：Minty 安装方法:
Extract the zip file to the themes directory i.e. "~/.themes/" or "/usr/share/themes/" or use Gnome Tweak Tool to install.
Install the User Theme Extension and use the Gnome Tweak tool to choose the themes.
To install the Gnome Shell theme without the User Theme Extension,
1. First backup your Gnome Shell theme directory i.e. "/usr/share/gnome-shell/theme/".
2. Extract the tar.gz file and rename "gnome-shell" directory to "theme",
3. Copy it to "/usr/share/gnome-shell/".
4. Restart GNOME Shell by pressing "Alt+F2", then type r and press Enter.
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To install User Theme Extension and Gnome Tweak Tool in Ubuntu, open the terminal and type,
sudo add-apt-repository ppa:webupd8team/gnome3
sudo apt-get update
sudo apt-get install gnome-shell-extensions-user-theme gnome-tweak-tool