Well...
DB 169 is not black, it is stein grau (stone gray), quite light colour, actually, since the 50ies, I think. He is right here.
Double check it.
As for the insides of trunk and soft top box, I think you are correct.
I would, however, appreciate the painter's attention here. The worst is ignorance and indifference...
I told my guy to paint the sill covers with a brush having seen some of the "holy grails".