Here's how you can add the beautiful Ubudao Style icons to your Ubuntu 13.10 system.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo add-apt-repository ppa:noobslab/icons
sudo apt-get update
sudo apt-get install ubudao-style
Ubudao Style icons were designed by Walenty Walewski, he worked really hard on this theme and this icon set look nice & elegant on desktop with every kind theme doesn't matter it is dark or light.More at Noobs Lab
Additional resources for Ubudao Style Icons