A theme is a predefined set of colors and fonts that you apply to your slides for a unified look.
Apply a theme
1. Create a presentation.
2. On the Design tab, tap Themes.
3. When you find a theme you want, tap Apply to All to apply it to all slides in your presentation.
Note: There are no Themes other than those you see on the Apply theme window.
Change theme
1. On the Design tab, tap Themes.
2. When you find a theme you want, tap Apply to All to apply it to all slides in your presentation.