Sardi consists of 6 major icon themes and 10 different kind of folders.
You can change all icon themes with the words flexible and colora in them. Sardi comes with many coloring scripts. You can color the icons any way you see fit.
These icons are an example what you can do with the Sardi icons.
More information about Sardi
What can I tell you about Sardi icons?
http://erikdubois.be/overview-sardi-icons-version-9-sardi-extra-icons/
Personalize the Sardi icon theme like you want it.
http://erikdubois.be/personalize-sardi-icon-theme-overview/
If you want to change the colours of the Sardi icons, check the articles about the flexibility of Sardi.
http://erikdubois.be/category/sardi-icons/flexibility/
If you want to mix parts of the icon themes with other parts, check the articles about the modularity of Sardi.
http://erikdubois.be/category/sardi-icons/modularity/
If you want to know on what systems/distro's Sardi has been tested, check here.