Is it possible to edit a record action error message?

So, I have a record action to delete a "contractor" from a list of contractors I've created with a record type. After deletion is complete, it displays this:

Ideally, I'd like it to display something else, like: "Contractor successfully removed", or "Contractor successfully deleted."

Is that something that's possible? This message is displayed on a site that a read-only grid is displayed on.