Launchpad: Change the level of background blur

Launchpad uses a blurred version of your Desktop image as its background. Using cmd + option + ctrl + B while in Launchpad cycles through the original image, the blurred one, a black and white version and a blurred black and white version.

With the following defaults write command you can adjust the blur radius:

defaults write springboard-blur-radius -int XYZ

Replace XYZ with a number between 0 and 255 (0 is the minimum and 255 is the maximum blur).

Restart the Dock to make changes affect:

killall Dock

Restore blur radius with:

defaults delete springboard-blur-radius