I had and still have a couple of grey pubes which are on the left side of my penis which I thought was really weird as everyone would but I started searching around google to see many other people had oddly coloured hairs beside ther penis so I went to see a doctor just in case he said it could be something stressing me but I was 14 so I wasn’t even doing my GCSEs yet so I believe it was masturbating a bit to much