I made a new theme (icon set) for the Reader. I think it's nicer than the original.
If you want to install it extract kBookIcon_Mod.zip to \files\opt\sony\ebook\application\resources\script s on your SD card with the universal flasher from Igorsk and flash your Reader.
If you want to go back just overwrite with the kBookIcon_Ori.zip file and flash again.
Hope you guys like it!