How to restore this sidebar icon?

[PureLogic]

Hey,

I was stupid enough to accidentally delete my Documents folder. I managed to restore it's original folder to a new folder I renamed to "Documents". But when dragging it to the sidebar I don't get that special document icon but the normal Documents folder icon (see pic).

Is there a way to restore it, delete a pref file or something?

Thanks in advance!

Edit:

Deleting the sidebar .plist thing doesn't work. :(

[PureLogic]

Found the solution. I made a new account and copied it's Documents folder over to my real account after changing it's permissions.