I think the colour code should be on the manufacturers plate, RHS of engine bay (when looking into engine from front of car).

Looking at the service manual (F70, F75, F77), the Daihatsu Colour codes are:

Green (mono colour): G05
Trad Green Metallic / Grey Metallic (two tone): NB3

I'm NOT sure about the year though.

1985 Veg oil burning Fourtrak "Rocky".