I have recently learned where to find application icons, and figured out how to ssh into them, and edit them. The first one worked (I had downloaded a cydia theme to add icons for shutdown, reboot, etc, but wanted them to be inverted colors). Then, when I did the rest, even after I replaced the default icon.png files, the original icons persisted. Am I missing something? Is there a better way to do this? Thanks for any help!