While Apple does an excellent job at creating a User Interface that looks good and easy to use, its not uncommon for people to want to add a bit of a personal touch to their computer. One way to add personality to your Mac is to change your OS X icons that display items such as your Hard Drive, Folders, and Applications.
To quickly change your OS X icons:
- Select the hard drive, folder, application, or other item of which you’d like to change the icon.
- Right Click (cntrl+click) and select Get Info.
- Follow the steps above of the icon you’d like to add.
- In the “Get Info” screen select the picture in the top left corner of the icon you’d like to apply to another item so that its highlighted with a thin blue outline.
- Copy the item with either EDIT >> Copy from the file Menu or by the keyboard shortcut cmd+c.
- Select the same icon in the Get Info of the item you’d like to change
- With the icon you’d like to change selected, paste the new icon by selecting EDIT >> Paste or the keyboard shortcut cmd+v.

The new OS X icon should now be applied and updated to the item you’ve selected.