The concept of applying Style in Silverlight is similar to using CSS in HTML.
In this article I am going to explain what are different ways to implement Styles for Silvelight Controls.
Styles provides flexibility & ability to control the visual
representation of all UI controls. Each silverlight control can be
represented using XAML elements. These XAML elements has a series of
attributes that set to make style for control.
Please check more details on my blog:
http://durgeshg.blogspot.com/2011/10/silverlight-different-ways-to-apply.html