Enable a hover effect for stack folders in grid view. When you moving over an item in a Stack in grid view, the item will be highlighted, making it easy to see.
defaults write com.apple.dock mouse-over-hilite-stack -bool true
To make the command take effect, you need to restart the Dock:
killall Dock
Revert to the default setting:
defaults write com.apple.dock mouse-over-hilite-stack -bool false
Screencast:
you have a typo in your killall command …
Oval Face Shape: only slightly narrower at the jaw line than at the temples, with a gently rounded hairline.