The “Content Toggle” element is quite useful. I personally like using it for FAQ sections with a 2-column row. Below is some CSS that can help you change some of the colors in this element. You can even take it one step further and use a custom CSS class in your row options – which could mean you should be able to target content toggle elements in different rows – so different rows have different colored toggle elements.
I may expand this post in the future with a video to show more on how this can be accomplished. For now, you may experiement with the CSS below to modify how your content toggle looks.
I also included some CSS at the bottom of this code snippet for how you can even change the toggle icon. Have fun!