Edited Greybird theme only for Xfce with Whiskermenu integration, new GTK3 integration and edited 'Ambiance' Xfwm4 theme.
To install the theme it is necessary to run the file manager as super user (Alt + F2 and type 'gksu thunar').
Extract the archive and copy the folder.
Then go to File System /usr/share/themes and paste the folder from archive inside.
(Needs gtk2-engine-murrine)