So, what i did was
> sudo apt-add-repository ppa:numix/ppa
> sudo apt-get update
> sudo apt-get install numix-icon-theme numix-icon-theme-circle
Then i went to unity-tweak-tool and selected numix-something under theme-icons tab.
And, nothing happened. Icons in my menu did not change at all. Tried launching unity-tweak-tool as root, no good.
Ideas?