Well, its been three months, but I have finally progressed the painting of the monocoque and doors. The exterior colour coats are done, ready for decals to be appplied.
For the fluorescent orange, I settled on a base colour of Tamiya TS-98 Pure Orange, which gives me good coverage over the primer, and then TS-96 Fluorescent Orange over. The green is Tamiya TS-35 Park Green. All these Tamiya spray colours were decanted and applied with an airbrush.
The parts were primed with grey primer, and then white primer was applied under (approximately) the orange areas. The orange areas (and a bit around them) were sprayed.
Parts primed in grey primer, with white primer where the orange will be applied. 
Base coat of Pure Orange applied 
Fluro Orange applied
For the masking of the green / black / silver, I mocked up the full body to work out where my lines should fall, like this:
Top view of the body shell and covers; white tape showing where the checherboard pattern will land. 
Side view of the body and doors, showing how the pattern lands on the door and surrounds. A paper mockup of the this decal is used to see how the lines will land on the “RENOWN” lettering.
Then the green, black and silver were sprayed:
Orange areas were masked, and Park Green applied. The right hand door has an error in the masking which I eventuaally fixed 
Green and orange masked off, black roof and windscreen surround painted 
Silver roof painted, body and doors covered with gloss clearcoat
This summary makes it look like the painting proceeded in an efficient, straightforward manner; it really didn’t. Along the way I repaired many areas of poor finish, paint chips, oversprays, incorrect masking. That’s why (with also some procrastinating) it took three months. Even today I had to repaint a section of orange that was discoloured by the decal solution (weird, right?). Note that fixing the orange means respraying TWO colors AND getting the correct intensity of fluro orange.
Jason's Mazda 787B Build 