I didn't realize that switching the theme switched the entire theme on Storyline file. So I tried a few themes out, thinking it was just that slide. I saved and closed the file, and when I reopened it I realized that all of my slides had been reformatted (a real mess), and there isn't a way to get back to my original formatting. :-(. Also, I noticed that switching between themes can change formatting in a destructive way.
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