Here are the colours I am using from the Xtracolor enamel range available from Hannants:
- X102 FS10219 Vietnam Tan
- X110 FS14079 Forest Green Vietnam
- X116 FS14102 Green Vietnam, Euro 1
Tan first, using a few drops of cellulose thinner to help the paint dry more quickly and go on more evenly. You can see that the paint dries to a really high-gloss finish which is exactly what I want ahead of decal application. When dry (at least 24 hours the Tan is masked out using Tamiya tape again and thin strips to form the curved edges of the pattern. You may want to check out your Techniques Bank where there’s an HD video of this phase as I used the opportunity to test out the very impressive new Iwata Revolution M1 airbrush. 
Lighter green next (Green Vietnam, Euro 1) and you can see I am just progressively masking more of the aircraft with each stage.
Finally, the darker of the greens (Forest Green Vietnam) can be sprayed last of all.