By Ellen Finkelstein
PowerPoint 2007 introduced background styles, which are solid or subtle gradient backgrounds based on some of the colors in your theme colors. They can create a cool, Zen-style look. You can use them alone, or in conjunction with your theme.
Use background styles on their own
Open PowerPoint 2007 or 2010 and you’ll see the default theme, which uses the default Office theme colors.
Click the Design tab and choose Background Styles to see the options.
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