I can run 2 instances of my app by launching the 2nd using open -a. Now what I would really like to do is make it easy for me to visually differentiate the 2 instances by giving the 2nd version a different icon. Could I make a new icns file and somehow assign it with the -b option which is "Opens with the specified application bundle identifier". I'm guessing the bundle identifier includes the icon? Is this possible? Thanks in advance for any help.