Office Theme font for titles

Hello All,

I have defined a theme with specific fonts. When I switch to a different theme, text fonts and colors switch as expected. However, title fonts and colors do not. I looked around and the only info I could find is this: If some text or graphics aren’t changing with the theme the way you expect, make sure the text is using Theme Fonts and the objects are using Theme Colors.

How can I verify whether the titles of my new theme are using a Theme Font or not.