Download Paper Theme

https://snwh.org/paper/download

creditos:

http://www.ubuntufree.com/download-paper-material-theme/

Download Numix Theme

Install Numix Theme & Numix Icons

Open a terminal (Ctrl+Alt+T in Ubuntu) and use the following commands to install Numix theme and icons from their official PPA:

sudo add-apt-repository ppa:numix/ppa
sudo apt-get update
sudo apt-get install numix-gtk-theme numix-icon-theme-circle

creditos:

http://www.ubuntufree.com/download-numix-theme/