I’m going to send this request along. Thanks for the feedback, everyone!
For now, the renaming of the card solution that Jim mentioned is probably the easiest way to make the card stand out in the FLO if you’re looking for it. “STOP” or something else in all caps would be a lot easier to see while scrolling through the FLO. I’ve included a screenshot below to show how to rename cards.
Just click the cog wheel in the bottom right and then the “Edit card” option that pops up. Then, click the little pencil icon next to the title of the card at the top to edit it.