Whoever it is must be a decent chap because they've put a hand-written apology on the beak for crimes against adventure bikes. And wherever it is they appear to have a parking area for white bikes only.
Yes, I'm a great admirer of Grayson Perry's custom shop too. He's been away from the British Superdooper Bike scene for some time but he remains an inspiration of how to personalise a GS for numerous owners, including the one seen in Sunderland:
A friend of mine who is a Panel neater bought a champagne coloured 09 GSA a while ago
He did not like the colour so over the winter he stripped it down and painted it white I have not seen the finished item yet but could be interesting