Are you referring to the complete masks ?

The straightforward rims fitted in the paper mask period seem to have been service colour.

The masks varied but black all over seems to have been more common.

Rik,

In the picture quite a few blackout mask are obviously in service colour.

Regards,
Leon

email (option): leonhop3_at_planet_dot_nl

Leon, I posted that photo to show that both were used. I don't think that there is a right and wrong but black seems to have become more common as time went on.

I've just received a lovely N.O.S complete DU42 headlight and the rim is mat black while the body is Olive Drab... Dunno if this helps?
Ian

email (option): fozzie001@hotmail.com