Am on an Aire in France with around 40 vans on it. Am the only Brit here and not one has an orange cable, not even the Dutch. Maybe its a Brit thing. If anyone is waiting to make a claim on my bank account, first they will have to find Smudger, as he drank it dry and secondly I wish them luck.
Since the Continental CEE 7 plug and sockets are rated at 16Amps the usual practice seems to be to have short adapter cables at the hookup point and at the MOHO and use a domestic extension reel between the two. All the ones I've seen use 1.5mm cable at best. The good old British 2.5mm EHU cable looks massive by comparison.