https://everardcunion.wordpress.com/plastic-models-land-vehicles/duck-a-lorange/#top

Thirty years after the end of the war that inspired its creation,
at an event on a windless day on the California coast in early 1975, a DUKW
ferried hang gliders and their pilots the mile from the car park to the top of
the 450 ft Guadalupe Dune. That is the example that my model depicts.

One pilot who attended the event described it in the UK hang gliding magazine as
dayglo orange and another author, in the US magazine, described it as bright
orange. To allow for possible over-enthusiasm of the writers involved, I used
plain orange. The configuration of the Duck – wheel guards fitted, windshield
folded down, splash guard down, no canvas top, and no gun mount – is based on
black and white photos in those articles.

http://ozreport.com/forum/viewtopic.php?t=53253