Hello, I would like to change the icons of the star that are used to show messages as flagged and unflagged. I have read in some posts that one can replace the icon files, but I cannot find any folder where they are stored. Where are the icon files stored in 128.5 on macOS (Macintosh)? Is the process for replacing the icons as simple as replacing the icon files? If you have replaced these icons, would you please tell me about your experience and give me your tips? Thank you. Rick