Add Hover Effect to Stacks

To add a nice hover effect to the icons in the stacks pop up enter the following code into your terminal ( applications/utilities/terminal.app)  

defaults write com.apple.dock mouse-over-hilte-stack -boolean YES killall Dock

To Remove this Stacks hover effect enter the following terminal command:

defaults write com.apple.dock mouse-over-hilte-stack -boolean NO killall Dock

Here’s a preview of the magic at work.It’s also important to note that this only shows when you navigate your stack pop up by keyboard.