You go to change the text of a presentation, but when you click in the placeholder, the text disappears. Or, when you add autoshapes to the presentation, the colors clash with the background. Worst of all, when you insert a graph, the colors of the bars fade into the background.
Set up the color schemes. Make sure the background color works with the title and text colors, even if you have a graphic as the background. Make sure the eight main colors in the presentation work well together.