Windows 7 allows you to customize the folders fairly easily.  Most people know how to change to a different listing of icons that are included with Windows 7.  However, this guide will not only show you how to change to a different icon, it will show you how to change using a secret hidden listing of icons that is contained in Windows 7. 

 To customize an icon:

All you do is right click on the icon that you want to change, then choose Properties.

Then a box will pop up, select the customize tab,

Then click on the Change Icon button.

When you do this the following selection of icons pops up:

These can be accessed by changing the field “Look for items in this file" field. The default location that is listed is:

%SYSTEMROOT%\system32\Shell.dll

To access the Windows 7 Hidden Icons for Documents, Pictures, Favorites and Videos plus a bunch more, put the following in the “Look for items in this file" field:

%SYSTEMROOT%\system32\Imageres.dll

Here is a screenshot of the additinoal hidden icons that you can now use as icons:

Then hit enter on your keyboard and voila, more choices for icons, including the default icons for Documents, Pictures, Favorites and Videos.