Changing the Background on Selected Slides
Sometimes your presentation will include one or two slides that absolutely demand a different background. Maybe the colors in a photo clash with the background color. Perhaps the bars of a chart don't stand out well enough against a color that's otherwise perfect for the rest of the presentations.
If you don't want to change the background for every slide in your presentation, use the same techniques described in the preceding section on individual slides. Select the slide you want to change, and follow the instructions. In the last step, make sure you click Apply. (If you click Apply to All, you'll change the Slide Master, and every slide in the presentation will take on the new background.)