Every theme includes a selection of preset object styles—sets of attributes like colors, borders, and shadows—that are designed to look good with the theme. A quick way to change how an object looks is to apply one of the preset object styles to it.
Select an object.
In the Format sidebar on the right, do one of the following:
For shapes, images, videos, or text boxes: Click the Style tab.
For charts: Click the Chart tab.
For tables: Click the Table tab.
Click one of the preset object styles near the top of the sidebar.
