Gave it a degrease and pressure clean up today- but had to hide it again before the BOSS got home (and cook and clean too) so no photos (yet).
However I did note the "burnt orange" finish seems to be just that... burnt by the environment. Paint hidden under the cowl/petrol tank and also under oil/grease shows a much deeper, red colour, almost an orange-red. Not helped by some resraying don on a couple of parts... but I'm guessing paint hidden under the cowl/fuel tank (or perhaps under a washer) will be my best bet of a match.
Oh, the wheels are pretty well toast.