This brings up something a friend mentioned to me. He noted that the display seems to create quite a bit of ambient light. Although, I'm not absolutely sure of this since I haven't taken the fascia off yet. Maybe somebody can tell me?

Anyways, we were thinking that you could cast the buttons in a glow-in-the-dark plastic. Then, the ambient light from the display would charge up the plastic buttons, and they'd glow after 5-10 minutes.