Sorry, can't help with the colors for the vehicle.
Here is how I go about it when I don't use my airbrush:
1.) Brush-painting:
Add extender/retarder to the thinner/paint mix(yep, same as for A/B).
Lay down multiple THIN coats of paints and vary the brush stroke directions, 2~4 coats should be more than enough. First 2 coats might look like it will never cover, keep going. No wet coats with brush painting unless it is a slow drying paint(extender) that allows the paint to flow and even out or produce tears depending on model and surface
2.) Airbrush effect:
Here the results can vary depending on what materials you use, so trial and error is the key.
Items: flat wire mesh(can be had at Arts supply store), toothbrush, old brushes.
Get the paint on the brush and than wipe of as much as you can.
Hold the mesh over the area to be painted and run your rbush over the mesh, this should deposit small drops of paint on the model.
You can get a range of effect but varying paint thinckess, movement speed, etc.
Don't forget to mask off areas you don't want any splatters on.
I keep an ol' notepad handy for tests when I use this technique.
Needless to say both of those techniques work best on a primed model.
HTH.