RadFormDecorator is a control designed to provide skinning capabilities to regular ASP.NET and HTML controls. The idea is simple—make the controls look as good as Telerik's own.
RadFormDecorator can be configured in different ways, targeting specific controls or specific areas called decorated zones. RadFormDecorator works with buttons, check boxes, fieldsets (including legend tags), headings (H4, H5, and H6), labels, radio buttons, scroll bars, text areas, text boxes, and SELECT elements (drop-downs and list boxes). The styling mechanism involves a combination of CSS and images, so it is a lightweight implementation.
There are also some limitations in its usage. For example, RadFormDecorator can't decorate the ASP.NET ...