Greetings all:
Yes, thanks to Mike for coming up with this. I agree with his question and summary as to why WNW didn't inlcude this. I used the old Aurora Transfer patterns, (4 color) for mine. It was all I could come up with and it has the effect. For transferring the image to plastic I made 4 copies. Painted the surface the lightest color, then cut out the next lightes color patterns laid that over the wing surface, air brushed that color, then did the next and so on. There are some feathered edges that I went over with a brush to define, but it worked. Good luck with this. Maybe Rowan will include it on his sheets.
Best
Mark