I've seen that story about various airplanes I think. The prototype Have Blue had a crazy quilt scheme and there was a later Nighthawk painted gray.
Nighthawks are still flying though it's on the hush hush. See Wikipedia for sightings
__________________
Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."