A button, button deck, and method are disclosed for a gaming machine. A button deck includes multiple mechanical buttons presented along a front shelf of the gaming machine. Buttons include a push button mechanism and a transparent button cap. A one-way mirror film positioned beneath the inner surface of the transparent button cap. A light source is positioned beneath the transparent button cap. A graphical printed pattern is positioned with respect to the light source and the one-way mirror film such that when the light source is active the printed pattern is visible through the one-way mirror film, and when the light source is off the printed pattern is not visible and the transparent button cap has a mirror appearance. The light may be controlled depending on configuration data for the gaming machine, associated with an installed game.