does anyone know how to extract it?

on the old 1.1.x it was in the same UIKitframaework folder as the keyboard-common, but on 2.0 its not there. the only thing i can find is in /System/Library/Textinput/Textinput_ja.bundle/Textinput_ja.artwork

i really want to mod this like my common and latin keyboards but i cant get at it.