The look of these is pretty neat and they were quick and easy to paint. The oils allow for very subtle shades of red blends.
I used a couple different reds - the Napthol red went on first and did most of the blending work. To push the red a little more, I used the opaque nature of true Cadmium Red in the areas that are intended to be brighter. The same scheme was used for the Driller Workers and other types of Drillers.