Hi. The finish was done with regular USN blues and the white. I then thinned down my artists media matt varnish with flow improver and added a couple drops of white and mixed it in very well.. All acrylic based. Airbrushed the mix very lightly over the upper surface colours. The darkened panel lines is very thinned matt black enamel brush applied to the panel lines then wiped over to remove excess. This was done before the above mentioned mix but after the decals. Nothing worse than having a weathered look and pristine markings and insignia. I go by the 'less is more' notion to get the desired effect even though it looks like a lot has been done. Hope the above helps.