Cara Instalasi:
cd /tmp
wget -O floristic.zip http://goo.gl/HDKPk
unzip floristic.zip
tar jxvf Floristic.tar.bz2 -C ~/.icons
Mengaktifkan:
gsettings set org.gnome.desktop.interface icon-theme 'Floristic'
Selamat mencoba !!!
Sumber: http://www.upubuntu.com/2011/11/how-to-install-and-enable-floristic.html