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Using themes for your PowerPoint presentations can be very convenient and efficient. Design Themes include preset fonts, color palettes, formatting effects, and backgrounds that give your presentation a professional look. PowerPoint provides a number of choices for working with slide themes. If you choose an existing theme, you can customize it to meet your needs. You also have the option of building your own theme.
If you have created a presentation and decide that your original theme no longer meets your needs, you can change themes at any time. This can be especially helpful if you are ready to present and you discover the current theme does not display well with the equipment you are using or in the room in which you are presenting.
WARNING: Some design themes will cover up previously inserted images and backgrounds.
From the Elements Gallery, select Slide Themes
The Slide Themes options appear.
Select a desired slide theme
The slide theme appears in your presentation
When you customize a theme, changes are implemented on all slides. Customizing a theme allows you to format fonts, backgrounds, formatting effects, and colors to make your presentation meet your creative needs. The following directions show how to quickly alter your theme with presets. To have even more control over your design theme, you can also manually create your theme presets.
Select a slide in your presentation
If the Formatting Palette is not visible, click TOOLBOX![]()
The Formatting Palette appears.
Select Document Theme
The Document Theme section expands.

To change color palette, from the Colors pull-down menu, select your desired colors
OR
Refer to Build a custom color palette
To change your font set, from the Fonts pull-down menu, select your desired font
By building a color palette manually, you can have complete control over how your presentation is colored. This can be useful if, for example, you are working for a university and want to use that university's colors.
From the Format Menu, select Theme Colors...
The Create Theme Colors dialog box appears.
To change any of the listed color elements, double click a box to the left of its title
The Colors pane appears.
From the Colors pane, select an element color
Click OK
NOTES:
The Preview section displays an image that is representative of the different elements of a slide.
The colors in the sample will change as you build your custom color palette.
Click APPLY TO ALL
Your color palette is saved and added to the Colors pull-down gallery
You can customize the background to your theme, so that each slide has the same one. When customizing the background, there are a variety of options available to you through the Format Background window, including gradient backgrounds, solid colors, textures, and images. For instructions on how to customize your theme background, refer to Customizing Themes.
If the PowerPoint theme designs do not appeal to you, or if you have special design considerations for your presentation, you may want to build your own theme. To build your own theme from scratch, you will be using the Slide Master view. When building your own theme, you have the freedom to customize your choice of fonts, colors, background, placeholders, and images.
From the File menu, select New Presentation
A new blank presentation appears.
From the View menu, select Master » Slide Master
NOTE: For more information, refer to Working with a Slide Master
In the Slides pane on the left, select the Slide Master (slide 1)
Make choices in the color set, font set, background
For each type of master (title master, bullet slide) repeat steps 1-4
Click SAVE
Your theme has been saved.