Para instalar los colores y Folder Color ejecuta desde una Terminal estos comandos:
sudo add-apt-repository ppa:costales/folder-color
sudo add-apt-repository ppa:ravefinity-project/ppa
sudo apt-get update
sudo apt-get install humanity-colors folder-color
nautilus -q
Ahora pulsa en _Activities_ y busca _Tweak:_
[![](https://3.bp.blogspot.com/-ORfDULUz6II/VIm1buqpUMI/AAAAAAAADfk/qecpNO12AD4/s1600/gnome2.png)](https://3.bp.blogspot.com/-ORfDULUz6II/VIm1buqpUMI/AAAAAAAADfk/qecpNO12AD4/s1600/gnome2.png)
GNOME Tweak Tool
Cambia el tema de iconos:
[![](https://3.bp.blogspot.com/-ATpZHHyh28U/VIm1bYQDboI/AAAAAAAADfc/o28OIjisByk/s1600/gnome3.png)](https://3.bp.blogspot.com/-ATpZHHyh28U/VIm1bYQDboI/AAAAAAAADfc/o28OIjisByk/s1600/gnome3.png)
Tema de iconos a Humanity-Light-\*
Ya lo tienes :)
[![](https://2.bp.blogspot.com/-9TtEzUZFssY/VIm1b26dEMI/AAAAAAAADfg/QkeMPRo6JLk/s1600/gnome1.png)](https://2.bp.blogspot.com/-9TtEzUZFssY/VIm1b26dEMI/AAAAAAAADfg/QkeMPRo6JLk/s1600/gnome1.png)
Funcionando en Ubuntu GNOME