Switch Background Styles of Launchpad in OS X 10.7.3
The OS X 10.7.3 update brought with it a variety of subtle changes, including a minor adjustment to how the Launchpad background image style is switched. In previous Mac OS X versions, Command+B would switch between the background effect styles, but this is now achieved with Control+Option+Command+B.
Try it yourself by opening Launchpad and then hitting the Control+Option+Command+B keys to alternate between backgrounds with blur, unblurred, black and white, and blurred black and white. You can see samples of these background style effects below.
Without a blurred background:
Black and white with blur background:
Black and white without blur:
Using the unblurred color background makes Launchpad on the Mac closely resemble Springboard on an iOS device.