I used Glidden Gripper primer under the yellow on my DE. One cross coat brushed into the weave. Then a sprayed coat with aluminum powder mixed in, then another coat to whiten it up. Yellow doesn't seem to cover very good, especially over the green Stewart's glue. The aluminum powder makes the base coats more opaque so that the glue doesn't show through, especially when there is strong light on the other side. The yellow remained fairly translucent otherwise. My fuse has no aluminum powder, but I used the linen colored glue on the fuse which covered better than the blue/green. I would use that for the whole plane if I had it to do again. I learned as I went and close examination will reveal various shades of yellow on different parts of the plane! Oh well, good enough for me.
I used Sherwin Williams color paint thinned with windshield washer fluid to a consistency that my HVLP gun would handle. I don't know if it's the paint or the thinning, but I have virtually no fuel resistance even with multiple coats of wax. The paint turns to goo in short order. I have to be really careful when fueling. I'm looking at doing a top coat around the tanks of a clear water based epoxy.