Here's how you can install the EleMint icon theme in Ubuntu 14.04. The EleMint icons are based on the Elegant Brit icons. They offer additional color and energy while still adhering to Element Brit's palette and style, according to the maker of the EleMint icon theme.
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 elemint-icons
Source: Noobs Lab
Additional resources for EleMint Icons
Additional Ubuntu resources