Sky go Greener?

When I switched my Sky box on the other day (at the wall socket, of course) I was greeted with a message screen that I had not seen before.

The vivid green screen that turns to red with the glassy Sky logo and a chameleon perched atop it is accompanied by the narrative:
We can all do our bit to be greener.
By switching your Sky box to standby, together, we can save enough energy to light all the homes in Birmingham for a whole year.
Remember. Go red. Be Greener.

We can all do our bit to be greener.

By switching your Sky box to standby, together, we can save enough energy to light all the homes in Birmingham for a whole year.

Remember, go red, be greener.

Switching to standby, aye? I thought that standby was the problem because it still uses electricity whereas the really green option is to just switch off at the wall.

All I can find regarding Sky being greener is an article that says a software update last year, rolled out to 9 million customers, could switch off the Sky box during the day, supposedly when not in use. I've seen the Sky box tell me it was going to switch off after 2 hours of inactivity and Sky reckon it saves their customers £20 Million a year - that's about £2 per customer.

Now, if Sky could go just that little bit further and totally switch the whole box off that would be even better :)