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by Christian Machmeier.
Original Post: Drop Shadow in the Dock
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How come?
Well, firstly without help of some sort of system tweeking tool, like TinkerTool (which is cool and handy nevertheless), but by editing a simple XML file in my home directory. Editing an XML file is easy and fun with Mac OS X, while the system already brings the Property List Editor to help you do that in a convenient manner.
So all this doesn't sound hard or weird, and so it isn't. Below, you can see a screenshot of the Property List Editor displaying the contents of the file com.apple.dock.plist, which you will find, if you'd navigate (starting from within you home directory) to "Library" and then to "Preferences", inside your Finder window.
For the sake of simplicity, I already marked the entry in the property list before taking that screenshot. Anyway, all you have to do then, is to set the value of the "showshadow"-key appropriately, so it fits your liking.
After editing com.apple.dock.plist you have to restart Finder, so that the new property can be read and applied by the system. You could also log out and log in again, and right afterwards your Dock has some new drop shadow, too.