Gray-throated is not found in the Santa Marta mountains, the nearest site is in the Colombia/Venezuela border in Perija.
The white lore is there, just that the picture is a bit shaky and not the best lighting conditions.
If the poster uploads it to eBird as Gray-throated from that location, the regional reviewer will likely say the same. They are in the same genus, but one is a common endemic of the area, while the other is found in a different mountain/sierra, where it is considered an uncommon species.