Adjusting the formatting of an object can make it more visually appealing or easier to see against the slide background.
For example, you can add a fill color, change the thickness or color of the lines that make up the object, and modify arrow styles.
1 Right-click the object to format on the slide.
2 Click the appropriate choice in the menu that appears: Format Shape orFormat Picture.
The Format Shape or Format Picture dialog box appears.
Leave the Solid fill option selected.
3 Click Color .
A color palette ...