Another example of the "blue confusion" all the vendors have with 67's!!...
And some of us owners! I know you and some others have helped me with the interior questions I have asked. I think there is 5 different shades of blue in my interior, all from the factory.
The original carpet for the "Bright blue" (Marina Blue) interior should be just about the same color as your door panels and seats, but just a little bit darker. The original carpet for the "medium blue" (Nantucket Blue) interior is actually much darker than the rest of the interior, and darker than the bright blue interior carpet. That is what is shown in Ed's picture above. And even that's a little faded -- when new the "medium blue" carpet was even darker.
FWIW, I have a 729 interior code, and yeah, that isn't a great picture of my carpet, that is glare and shadow with Las Vegas sun. I have thought about replacing it, it is shrunk a bit and needs a good cleaning. I may remove it and go over it and see how well it cleans up. Also, the armrests were off, the shop that made the cover for the seat made new pads from the seat vinyl, also, the steering column isn't original, that is something 1970s (Buick maybe) that we modified and removed ignition/lock components, and painted.
But, BOTH Bright and Medium blue options were available in 1967, correct, and the only difference is the carpet, and the plastic kick panels? The rest of the interior is the same between the 2 blues? Obviously my seat cover is not original, it was all vinyl.
Call James Hinshaw and order from him, because he has figured all this out pretty good and can actually get you the correct colors,...
They irked me one day out at Carlisle when I asked about replacement blue window cranks and basically told me they didn't exist since they didn't sell them. Mine are nice and intact, but drivers side is getting loose, and I wanted a backup pair to use.