Fonts Source
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Heading Font : Oswald (https://fonts.google.com/specimen/Oswald)
Body Font : Open Sans (https://fonts.google.com/specimen/Open+Sans)

Change Themes Color in Powerpoint
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- Open the Template you want to use
- Go to Tab "Design"
- Choose "Variants" -> "Colors" -> "Customize Colors..."
- Changes Accent 1-6 with your own Colors

try our diagram, infographic, chart template and Themes for powerpoint & Keynote to combine it:
https://elements.envato.com/user/SlideFactory