The fact that SmartArt allows so much customization in PowerPoint 2010 by applying new colors or styles means that your SmartArt graphic may be not quite the same as PowerPoint’s default offering — in addition, you may have resized or moved individual shapes within the SmartArt graphic, and there’s no real undo for any of these options once you save and close your presentation file. If you do have the need to undo all of the customizations, you can do so by restoring the default layout and colors of the entire SmartArt graphic using the Reset option.

