As Charles mentioned, the actual color varied, but for 67 it would be best described as red-oxide in color. The black is incorrect. As discussed in other posts, by the 69 or 70 time frame, depending on the assembly plant, Ford was dumping leftover paints in the mix, making it a "batch" paint what was much darker in color. Ford was/is a frugal company (I suppose you could say they were "green", not to avoid dumping unused paint, but to make more "green" in terms of money). I don't know if this was prevalent in 67, but there was some variance in the red oxide color. The best method, if you want to go concours (and what we would assume given that you are posting on a web site that carries this moniker), you should chip off the black paint and get to the original color. Above the rear axle by the snubber works (unless there is a lot of rust), but the best place is above the transmission. Mix some black in with the red oxide until you match the color. You won't find a perfect or near-perfect match out of a can or spray can.
Once you have the match and go to apply the material, do some searches here for other posts that discusses that process. We can anticipate your next series of questions regarding sound deadener material, pinch weld blackout, etc. There are several posts (and pictures) that go over those details, keeping in mind differences from year to year, plant to plant, and during the course of a production year to make it that much more interesting. And don't forget the "drips" if you want the car to look "right".
