Changing an OSX Icon

Your going to copy an image to the clipboard and then past it into the object properties that you want to change.

So how ever you want to get the image into the clipboard, eg using 'preview'.

Then on the object you wish to change the icon for:

1. Right click | Get Info
2. Click the Icon image in the top left of the properties box (blue border) and from the filer menu 'paste'

You can use this technique for any object, apps, folders etc ..