How to Tweak a PowerPoint 2007 SmartArt Diagram
When you’ve create a PowerPoint SmartArt diagram, PowerPoint applies a Quick Style to it. PowerPoint provides a large assortment of Quick Styles to choose from. To change the Quick Style for a SmartArt diagram, follow these steps:
Click the diagram to select it.
This adds the SmartArt tools to the Ribbon.
Click the Design tab.
The Quick Styles group displays the most commonly used styles for the diagram type. If the style you want to use isn’t visible in this group, you can click the More button to display all available styles.
The SmartArt Tools Design tab also includes controls that let you modify the SmartArt diagram by adding shapes or bullet items or changing the chart type. Reset the diagram to its original appearance by clicking the Reset Graphic button found in the Reset group.