I happened to be running a quiz at the weekend, one of the questions for which was "What colour is an aeroplanes Black Box"? So it was fresh in my mind!!
I was on holiday in Wells-Next-The-Sea at the beginning of August & it was a question in a pop quiz in conjunction with the town festival weekend but I went home before the answers were announced & that particular question has popped in to my head regularly since!! So, you'll be happy to know that I can now rest in peace!!