A derivative from Sweet theme, with less colours, this theme has been used on gnome desktop (I haven't tried it yet on other distro). It does resemble other popular themes, as you will probably noticed.
Unzip the files in your ~/home/[username]/.themes director, and if it doesn't exists, create it in there.
Please use GNOME-tweak tool and GNOME Shell extension User-theme (link below) for an easy installation of this theme.
As icon theme - I used Numix for the screenshots. For cursor - a modified theme based on Pulse-Glass (link below).
For titlebar settings, I also uploaded a gtk.css small config file which should be copied in the ~/home/[username]/.config/gtk-3.0 director.
Log off and log in or press Alt+F2 and 'r' after copying the file to gtk-3.0 director..