Apparently it’s up to the individual franchise that has Honda. I have phoned numerous garages they are all saying the same, Black is standard red and blue are £650 and White special is £975. They have very few red and blue left but no black left, these garages were all the same company as I am using.
I tried two different companies unfortunately one was 250 miles away and the other in England both said the same thing I could have any colour other than the specialised white which asked for an additional payment. They again said the cars were going fast and only a handful left, if I was going for ZR-V, I would need to act quickly.