Hi, Troy... sure thing. I created a state for each text box that just changed the format color to orange. I called it the Highlighted state. To do this, select a text box, then select the States tab down in the Timeline area. You can edit an existing state (or create a new one by just typing in the new state dialog which is what I did). Then, while you have the state selected, you can edit it. I just changed the color, but you can do anything you want.
Then, you have to tell Storyline when to use that state. So, you create a trigger. For every hotspot area, I had two triggers. One will show the correct layer when the user clicks the area. The other trigger changes the state of the corresponding text box to Highlighted when the user hovers over the hotspot.
Check this out:
https://community.articulate.com/series/articulate-storyline/articles/adding-and-editing-states