"These are the ones that some bright spark decided should be in the same colour as the BSP machines. Without recognising that the colour scheme combines the Shell colours with the Brunei Flag!"
Also whoever come up with that scheme has never been around Helicopters, first thing is get a profile pic of a helicopter do around the exhaust and top half of tail boom black then give profile pic to Muppets who come up with a scheme to do as they want , this is a hard scheme to keep clean.