Quick Style

You can add a designer-quality look and polish to your shapes by applying a Quick Style (Quick Styles: Collections of formatting options that make formatting your documents and objects easier.) to all of the shapes in a page.

Click the shape that you want to apply a new or different Shape Style to.
Under Format Tools, on the Shape Format tab, in the Styles group, click the Quick Style that you want.

How to change the Quick Style

If you apply a Quick Style to a shape, when you change the theme, colors you can change the professional designer-quality look quickly.

Under Page Layout tab, in the Themes group, change the Theme, Colors, Fonts or Effects.

Set the Default Style

In the Quick Style list, right-click the item and choose the Set as Default Style item.

Then all the new added shapes will apply the style automatically.