O tutorial a seguir foi útil quando eu quis fazer algo semelhante.
First, open Windows Explorer, which defaults to the Libraries view. Here, if you right-click a default library and choose Properties, you'll see that there are a few changes from the same dialog in Windows 7.
First,theIncludeafolderbuttonhasbeenrenamedtoAdd.Anewbutton,calledSetpublicsavelocation,allowsyoutosetanewlibrariesoptions,forapublicsavelocation.(InWindows7,youcouldonlysetthecurrentuser'ssavelocation.)Andfinally,there'sanewChangelibraryiconoption,thoughthat'sgrayedoutfordefaultlibrarieslikeDocuments.
Checkthepropertiessheetforcustomlibrary,however,andthatoptionisnowavailable.
To change the icon, click the Change library icon button. This will display the Change Icon dialog, which will by default show a great collection of new and old Windows icons. (Some actually date back to Windows 95.) Select the icon you want and click OK.
Now,yourcustomlibraryhasanewicon.
Note: Power users will typically hide the humongous Explorer ribbon in Windows 8, but if you prefer to use that, this option is available from the ribbon as well. Simply select the library icon you'd like to change and then select Change icon from the ribbon.
