ok I had to go out there and look... is this the scheme you were talking about?
I don't know the answer but thought I would post that for others to see... I am sure someone here could answer, but you might want to post this over in the aircraft section too... there's a few WWII German camo schmes that rival this complexity..
the dark areas on the topside supersructures would have to be masked, either firsket, tamiya masking tape etc... depending the total diameter of the saucer you might want to think about painting it a base color, the mask several sized sqaure/rectangular masks and hand paint them...
but I know someone has a better solution so I'd wait for them to answer