Hi Carbuff, the stripe will be polar white. I had some cameo white mixed up and it's just too pale. Polar white is clean and tight looking against the blue and black. And for those with white interiors

I think it will compliment the white interior better too.
Here are some comparison pics:
Layers top to bottom Pic 1:
Current reproduction stripe (note the poor dimensional aspect of the trunk stripe)
Test panel with Cameo White
New Proof stripe in Polar white
NOS early '70 white stripe for blue car with dot fade gradient (prior to the change to black)
NOS white stripe
Top to bottom pic 2:
Cameo White test panel
New Proof stripe
Current reproduction
NOS white dot fade stripe
NOS white stripe
Top to bottom pic 3:
Cameo White test panel
Cameo White PPG 1972 color chip
New Proof stripe
Current reproduction
NOS white dot fade stripe
Top to bottom pic4:
Cameo White test panel
Cameo White PPG 1972 color chip
If you'd like, I'll be glad to send you a swatch of this white so you can have your paint mixed to match, and let everyone know what the color mix will be for it!