Many thanks to you both. Just to contribute a little. The rubber boot for the rear brake switch is available ex stock on line from Ducati Manchester for the princely sum of £0.50p.
The Ral code for powder coating seems to be 9016 or 9010. There was some debate on a Dutch forum on this subject and it comes down to how white do you want your white.
http://www.ducatiforum.nl/viewtopic.php?t=30480
I found a fiche online but it does not show a rubber boot over the switch that sits next to the oil filler cap on the clutch side of the cases. Is this the correct please? I made a mistake when I asked originally.