HeKS said:I think his point is that Indy should only be 57 or 58 in the movie, but Ford was 64 or 65 during filming. So yes, it's Ford's real hair color, but it's his real hair color at 65, not 57.
Check out "What Lies Beneath", which Ford made when he was 57...almost as grey as it is now. I don't think the difference is particularly noticeable. ...certainly not noticeable enough for the gigantic effort it would take to re-color it properly.
...IMO.