How do I change the icon of Emacs installed via Homebrew?
I found a way to change Emacs GUI dock and other icons.


Download png files from http://emacs.sexy/#icons, or use your own.
Take the largest png and convert it to .icns file with an online converter (google)
Open Finder, go to Applications, and right click Emacs to Show Package Contents, then navigate to Contents - Resources
Replace the Emacs.icns file with your own from #2.
HERE's the tricky part - then I had to also do the drag-drop trick.


In a NEW Finder window, go to Applications, right click Emacs and click Get Info.
Then from the other Finder where you have the new Emacs.icns file, DRAG it to the TOP LEFT small icon in the Get Info window.



No restart required: