1] Reinstall the application and set Compatibility The application icon on which you notice these shields is usually a shortcut. They signify that the UAC prompt will appear every time you run the ...

Press Command-Tab for the Application Switcher and then, keeping Command down, press and hold Q. Each application quits in turn; you’ll be notified if there are any unsaved changes in documents.

Windows only: If you've got an application with a really ugly icon, or you just want to get some hard-core nerdy action with your desktop customization, Resource Hacker is the tool for the job.

In iCloud Drive, the special application specific folders have an overlay of the application icon on top of the folder icon. A while back, I had an issue where the folder "lost" this overlay ...

It turns out that there’s a much simpler—though completely non-obvious—way to get a full set of an application’s icons, at least if you’re running OS X 10.4 or 10.5.