Modify PowerPoint theme elements to mix and match colors and fonts. Learn all about using the PowerPoint modify theme feature here.
It's easy to apply a new set of theme fonts without changing a theme's overall look. The built-in theme fonts are designed to work well together, which can help to unify your presentation.
If you have specific fonts in mind for a presentation, it's easy to choose your own theme fonts.
Changing the theme fonts will not necessarily update all text in your presentation. Only text using the current theme fonts will update when you change the theme fonts.