Hello Linux Geeksters. MediterraneanNight is a nice theme, compatible with Gnome 3.8 and Gnome 3.6. MediterraneanNight can also be installed on Xfce 4.8, needing the following: GTK3, unico-engine, GTK2 Murrine, and Pixbuf engine.

The archive contains the MediterraneanNight 2.3 theme, in 12 different flavours: Mediterraneandark, Mediterraneandarkest, Mediterraneangraydark, Mediterraneanlight, Mediterraneanlightdarkest, Mediterraneannight, Mediterraneannightdarkest, Mediterraneantribute, Mediterraneantributeblue, Mediterraneantributedark, Mediterraneanwhite, Mediterraneanwhitenight.
To install the MediterraneanNight 2.3 Theme on Ubuntu 13.10 Saucy Salamander, Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 15 Olivia, Linux Mint 14 Nadia and Linux Mint 13 Maya, do this:
$ mkdir -p ~/.themes
$ wget -c https://dl.dropboxusercontent.com/u/80497678/MediterraneanNight-2.03.tar.gz
$ tar -xzvf MediterraneanNight-2.03.tar.gz -C ~/.themes