I was using the Red and Black theme and decided to create a red and black password lock screen. Nothing amazingly special but a nice addition to a great theme. Simply put both of these files at System/Library/CoreServices/SpringBoard.app . (However I suggest you make backups of your own first) Post with comments. Note that when unpressed buttons are black and when pressed they turn red, can be switched if you chose, by changing the titles. Edit: Fixed number sign and uploaded.