: A new option in System Preferences allowed users to dim the menu bar and Dock for a more focused interface. Key Features
: Toolbars, sidebars, and the Dock became semi-transparent, allowing colors from your desktop background to subtly show through. OS X Yosemite 10.10
: The search bar moved from a small corner menu to a large window in the center of the screen, adding the ability to search the web, Wikipedia, and local movie times. : A new option in System Preferences allowed
: The Dock was redesigned as a 2D translucent strip, and system icons were flattened. and the Dock became semi-transparent