Is there anything interesting you can do with the colored A, B, C, D buttons at the bottom of the remote other than emulating whatever functionality your cable remote assigns to those buttons when you're in Live TV? I'd love to be able to program them to launch a particular app or something. Also, is there a way to set the power button to power on/off everything at once? I don't understand why this isn't the default behavior. If I turn on my Google TV, it's pretty obvious that I also want my cable box and TV on.
No. & no customizing keys options. No. Btw, most cable boxes (& some TVs) have only on/off power-toggle and no available on/off discrete IR codes (but there is a workaround for URC).