1976 Formula decal colors
 

How can you tell what color decals came with the car ? there is no code on the data plate for the decals just whether the car was two tone paint or solid color . I have a Formula in Athena Blue, solid color and the decals are long gone. I noticed several colors were available.
Thanks

Standard Formula, no W50 option. Decals were Light Blue, Dark Blue and Black.

The same as this dark blue example, and often white Formulas also.

https://cdn.dealeraccelerate.com/gkm...rebird-formula

https://cdn.dealeraccelerate.com/gkm...rebird-formula

https://cdn.dealeraccelerate.com/gkm...rebird-formula

https://cdn.dealeraccelerate.com/gkm...rebird-formula

My Blue(Athena blue) is so light I don't think the light blue decals would show up well on my car. The car in the pictures you linked appears to be Polaris Blue.
I have a unidentified code on my dealer invoice I got from PHS. It is Blue APP-NC 26X, I can't find any reference on the Google to that code. It's not the car's paint code as that is 28. I didn't realize you could get the blue decals in different shades.

Yes, that was just a blue 76 Formula to show same decals. The light and dark blue decals are the same thing, as shown.
What colour interior? Occasionally they would alter standard decals to suit, but not many of the other options would work anyway.

Well I just figured out the 26X was an interior code, Its a white and blue interior, seats headliner upper door panels are white, the rest of interior is blue 11N is the white and 26X blue.

Yes, white with blue appointments.