Diet change=natural hair colour change?

[shootingstar]

I remember reading somewhere that people who started drinking green smoothies (like, really green -- kale + romaine + spinach + pear + avocado, etc.) had a major improvement in overall health and a side benefit of their hair turning dark again, after having gone gray. It was credited to the better absorption of HCL in the greens by the digestive system, which required some healing from the greens to get there.

I will mention this to the woman at work who now has lovely natural near-black brown hair while she's been on her healthier diet for awhile.