Keynote prompts us to select a theme when we first create a slide show. We don’t have to stay with this theme. We can easily switch between themes until we find one that works well with our content.
To change the theme, click on the document section and click the change theme button.
When switching themes, we might want to keep any style changes we’ve made to the presentation. Make sure the option to keep the style changes is checked.
Select another theme from the theme chooser. Double click the theme or click on the theme once and click the “Choose” button.