Apply a Theme
Apply a theme to the entire presentation
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Select any slide of the PowerPoint presentation
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Go to Design tab > Themes group > click the down arrow in the Theme Gallery to expand for more themes
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Select a desired theme to apply to all the slides in the presentation including the Title slide


Apply a theme for a particular slide in the presentation
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Select the slide to apply a different theme
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Go to Design tab > Themes group > click the down arrow in the Theme Gallery to expand for more themes
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Right click on a desired theme to apply to the slide > choose Apply to Selected Slide

Change the color, font or effects of a theme
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Go to Design tab > Themes group > click Colors, Fonts or Effects
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Select a desired set of color, font or effect to apply to all the slides in the presentation


