Windows 7 still shows old icons after change! I found a solution but I don't think it's the best but it works.

Close all folders that are currently open.

1. Press CTRL+SHIFT+ESC key sequence
2. Right-click on the Explorer.exe process and kill it by selecting  End Process.
3. At File menu of Task Manager, select New Task (Run…)
4. Type CMD.EXE, and click OK
5. At thePrompt window, type the commands line by line and press ENTER after each command:
   CD /d %userprofile%\AppData\Local
   DEL IconCache.db /a
   EXIT
6. In Task Manager, click File, select New Task (Run…)
7. Type EXPLORER.EXE, and click OK.