Icons through
Interfacelift
The process is quite easy actually. Its simply copy and pasting
Application icons are all generally unique, so they stand out from one another. Folder icons may flaunt a plain blue folder facade or display a little extra decor on the folder icons to help you identify what's inside of them. File icons generally display a document with an application logo that lets you know what application created it or can open it. But you can change these mini works of art to ones of your own choosing or creation.
To change an item's icon to another one:
1. Select the volume, application, folder, or file whose icon you want to stamp onto another, just click the icon to select it.
2. From the File menu, choose Get Info or press Command-I to open the Info window.
3. Click the icon in the upper-left corner of the Info window to select it.
4. From the Edit menu, choose Copy or press Command-C.
5. Select the volume, application, folder, or file whose icon you want to replace.
6. From the File menu, choose Get Info or press Command-I.
7. Click the icon in the upper-left corner.
8. From the Edit menu, choose Paste or press Command-V to replace the icon.