if you do not wish to install another app, check "increase contrast" in the mac settings under accessibility>display. it will draw borders around windows and text entries. Much welcomed.
Not a script, not a configuration, but an actual app that occupies space and RAM and does just that? How had somebody come to this weird idea that everything is an APP?
People do not want to manage scripts and configurations in esoteric locations. They want to drag and drop app bundles into the trash from the apps folder.
This is trivially found out after 5 minutes with a user.