Where can I find more Unity themes?
The Themes Collection by NoobsLab PPA has an interesting selection of themes for all currently supported versions of Ubuntu up to 16.04. To add this PPA to your software sources open the terminal and run the following commands:
sudo add-apt-repository ppa:noobslab/themes
sudo apt-get update
Then you can install popular themes from the default Ubuntu repositories, like MBuntu, which resembles Mac OS X Yosemite, Numix and several other themes.
you can start with these:
- Noobslab
- Numix
- Orchis
or better use google search
The popular Numix theme has landed in the Ubuntu Software Center starting with Ubuntu 14.04. There is a choice of either the Numix - GTK3 Dark Theme or the Numix - GTK3 Light Theme, either of which costs $3 USD.