There are a number of ways you can customize the look & feel of your RadToolBar control:
To change the overall look and feel of the toolbar, set the Skin property.
To change the look of an individual button in the toolbar, including reflecting the button's state, use a CSS class property.
Use the properties of the individual buttons to add images.
Use templates to substitute controls for the toolbar buttons.
Turn buttons into separators to manage the layout of drop-down lists.
Use Animations to customize the appearance of drop-down lists when they expand and contract.
Set the Orientation property to specify whether the toolbar is horizontal or vertical.
Use the dir="rtl" attribute to give the toolbar a right-to-left orientation.