7666 green button in the UK
In the UK the red and green buttons are used for digital teletext (as they should be). This means that the green eco button is no longer available. Most of the functions are duplicated elsewhere in the TV settings menu and therefore can still be used with the exception of the ultra useful "Screen off" option (at least not that I can find). This means that in the UK this function is effectively disabled which is a real shame as it's brilliant if listening to music via USB.
Ideally the eco menu should be available through the adjust button on the remote in addition to green. At the very least the screen off function should be switchable in the TV settings menu.