About what viceroy said,
Look at Anna Paquin as Rogue in X-men.She had a big *** grey steak down her hair and was still bonable.My friend ws 18 when he started gettin grey hairs but he didnt care about it.When people used to say sh*t about it he would reply"yea im gettin old".
I think grey hair is better then havin no hair..atleast in my book.If it bothers you that bad do what the others have said and dye your hair.Atleast you'll feel better.