My guess is that they want to put the wristbands on themselves this year!
....so you don't know in advance what colour to buy from your local printers?........

I discovered at the GP that the Brands Hatch wrist bands that I had lurking round my briefcase were the same colour as the Saturday Marshal's guest wristbands!
Now being a genuinely honest person I didn't do anything dodgy but the temptation was quite strong!!
Muz, Termie, it does appear that some of the race cars but not all will make the run to Spa along with all of the drivers (presumably on the Saabs that they usually use for the circuit parade?). It doesn't appear to show on the timetable but we'll try to confirm when we collect media stuff - I'd imagine it's still on the Wednesday as the drivers briefing is held at the Casino then.