change background style of a presentation
Answers
Answer:
Every theme includes a background. The background can be plain white, a solid or gradient color fill, a texture or pattern fill, or a picture. When you change to a different theme, the background is replaced.
Background colors are defined by theme colors. Therefore, if you change the theme color scheme, PowerPoint updates the background to reflect the new theme colors.
If you like a particular theme with its color scheme and fonts, but you want a different background, you can quickly apply a different background to all slides or to a selection of one or more slides.
Explanation:
On the Design tab, in Customize, click Format Background.
Screenshot shows the Customize group with the options for Slide Size and Format Background.
Select among the Solid, Gradient, Picture or Texture, or Pattern fill options to create the background style that you want.
Settring the background format
Select Apply to All.