Hi Grant,
You may be right about the color, but a few things about that:
One, I have read many times about the true color of the Lenticular getting dull over the years on the movie Boards. So that may be why some think the color was more of a dull/flat pink from some of the brightness dulling.
And in pictures, the light in which they were taken in can change the look of the Board so much. Also, I have a letter from Icons ,it states that they were giving access to a lot of the Movie props and information in Hollywood to create some of the most screen accurate props out there. They went the extra mile to get it right and had the inside that others did not. One other thing is the idea of the Mattel HB was to be a little girls toy, and if you have seen Mattels Barbie related toys like Bikes, Power wheels ect, the Pink is Neon Pink, with lime greens, bright yellows, and so on. Last, if I am wrong about all of this, to me the fluorescent pink Lenticluar looks so sick in person, that you will not want the flat dull looking pinks.
This is just the way I took the information and pictures I found over the years,( but you could be 110% correct . )
The Lenticular I had years ago, I got from Summers Plastics and paid around $780. for 50 Yards x 24" wide .(It was a stock item) It was a purple/pink color, but when they sold it to me, they said it was a Neon Hot Pink. When I got it, not so much !! However, it was the closest I could find without doing clear.
Anyway, I can send you a sample of the Icons if you want, let me know.
Thanks!