Maybe it is possible but I can't do it. It would require programming skills and knowledge which I don't have.
Ixtab, the genius who wrote the
jbpatch extension for the kindle touch and the jailbreak for the paperwhite, already wrote an hack to modify the status line. I'm quite sure he can do it but I think that right now he's trying to port his jbpath to the paperwhite, fighting against code obfuscation and casting curses (in german).
I've also tried to port the PaperWhite plugin directly to the Kindle touch but it does not work.
Sorry!