In 1978, I purchased a 1967 GS 400, 4-speed, blue exterior with black interior. The car was purchased in Denver and sold in 1979 to a person who also lived in Denver. I have not seen the car since. It was a great car, was in good overall condition, but smoked pretty badly. If you know of anyone who has a 67 GS 400, blue exterior with black interior and 4 speed, non-air, power steering, I'd like to hear about it.
I know of a 67 that is was painted blue a long while back with a black interior but was originally green according to the data tag. Black buckets
Disc brakes on a 67 is extremely rare. Mine had no vinyl top, ps, rear defogger, rear sway bar, trailer hitch, remote mirror. Found in SF California with black plates. Also a few shades of blue are offered in 67, mine was the darkest. Sold it, but I know where it sits.