The different colors of a Callout can be useful for emphasising different states such as success, warning, or error. However, changing the Callout color is currently a manual task.
I think it would be useful if a Callout’s color can be based off a formula or something similar.
That’s already possible with the wonderful format() formula and some predefined templates. You can do almost any formatting programatically in this way.
Take a look at my example and let me know if you have any questions.