Chart Tools ->Format->Shape Styles->Shape Effects->Preset

graphic1
graphic2

Format Chart Effects

Each element in a Chart can be selected and formatted separately. This example will format the data series in the Columns.

 

3. Try it: Format Chart Effects

Go to Slide 2 and click on any Data Series, say the bottom Shape in the Stack, Pigs.
The entire Pigs series will be selected.
The Chart Tools should be on.

Go to Chart Tools->Format->Shape Styles.
Go to Shape Effects->Preset.
Choose a Style: Preset 2
 

Try This, Too: Format the Other Series

Select the other two Data Series and format the Shape Style to match.

 

Keep going...

Exam 77-422: Microsoft PowerPoint 2013
3.0 Create Slide Content
3.3 Insert and Format Charts: Create and Modify Chart Styles (Format the Border)