Change Color of a Single Slide in PowerPoint
How to change background colour on slide in PowerPoint. A theme is a combination of theme colors and theme fonts. All documents contain a theme. The default is the Office theme, which has a plain background and limited colors. But you can easily change an existing Theme to Black & White and then apply that to a single slide in your PowerPoint presentation. The default is the White theme. You can choose a theme when you start a new presentation, or apply a theme to all slides or a separate group of slides as you go.
To apply a solid color to your background, Right-click the slide that you want to add a background color to and then click "Format Background" in Solid fill, Select Color and then choose the color that you want.
