Huh. I thought their light hair was just a manga stylistic thing, but it looks like they actually have grey hair with young bodies. In other words, their hair color didn't return to what it was when they were younger.
@blackseven It wouldn't surprise me if it slowly grew out their original hair color. After all, the hair itself isn't alive. Only the follicle.
It'd be interesting if the author put that little touch in.
@Blackseven we've seen their old hair colors in previous flashbacks, such as when Gramps asked for Gran's hand in marriage, or when their son remembered his mom praising him. Their youth has been restored, but not in a time-reversal kind of way. Just that their bodies don't have all the issues that come with aging.
Kind of makes me sad when there is no one in that clean up crew among the real youth generation, not just those two cheat young people. I remember there being a trend on the internet of kids going to trash ridden sites and taking a before and after clean up pictures. I'd love if that trend would take off more. It's satisfying to see the transformations of improvement and know people are taking care of the world around them.