Dermotology for your desktop. Skins are very similar to desktop themes.
Skins are like wrapping paper, dramatically changing a programs interface.
If you would like to see an example of how dramatically a skin may change a program's interface, click here . You probably don't wear the same color and style of clothing everyday. Likewise, the automobile industry doesn't make all cars the same color and style. Because a lot of people enjoy showing-off their own sense of style. Simply put, skins provide another way of expressing your personal taste.