Yesterday we saw the first option of how to change the background of our Notification Center on OS X Mountain Lion using the native tool Finder and the Preview app to modify the name and format of the image, so that we can use it in the background of our Mountain Lion CN.
Today we will see how to do the same using a tool that we have available completely free of charge and with which, in addition to being able to modify the background of the CN, it allows us to make other changes (be careful if we do not know what we are playing). This tool we can't find it in the Mac App Store officially.
With this application installed on our Mac we will not need the Preview to modify the file format and name, nor will the Finder. Let's see in a few simple steps how Mountain Tweaks works to modify the background of the Notification Center.
The first thing we have to do once downloaded and installed is to select the tab 'Mountain Lion Tweaks'
Then we have to click on the 'Yes from Change the Notification Center background' and a window will appear to select the image that we want to use as the background of the notification center. Once selected we just have to click on 'choose' and ask us to let's type the administrator password to make the changes.
And that's it! We open the Notification Center and we will see our new background in it, we do not need to do anything else.
In the event that we want to return to the default background configuration For OS X, we just have to open Mountain Tweak again and click on the 'No' button (we add the administrator password again) to undo the changes and the background will return to the original.
More information - Change the background of the Notification Center in OS X [Part 1]
Link - Mountain tweaks