Prismas is my collection of opaque themes, light and dark, available in different color flavors: blue, gray, green, orange, purple, pink, and red.
Extract the zip file. Then extract the tar.gz file to the themes directory i.e. "~/.themes/" or "/usr/share/themes/"
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.
Bugs to report? Please let me know!
GTK 3 themes that will go well:
Icon Themes that will go well:
Just to name a few...