Now you can make tweaks to your new Mac Lion OSX in terms of changing background screens. Be it mission control, launchpad /icons, and login screen. Lion Designer, a quick tweak which allows you to change background images for different screen, including folder backgrounds and container icons. Change any desired background images in a matter of click. In case, if you don’t like it, a quick Reset will take you back to default image.
A simple, and neat tweak available for Lion which gives you control over your background images. Quickly make changes to your backgrounds and open the utility from the same panel to have a quick preview. It is must to have admin rights before making any changes. Like any other tweaks made on Mac, password would be required before any changes can be made.
source: Usman at AT