First grey hair at 30? Lucky you! I went to the barbers at the age of 27 and in the process of him using the clippers on my hair, I happened to notice some grey flecks in the hair that was falling on the floor. I was outraged, you'd have thought the barber would clean his equipment properly before using it on the next person. Then I realised that grey hair was mine. Some 6 years later, I have a little bit more, but I'm still 95% my own colour.
I'm fit and healthy, doing what I want to do in life, not stuck in a dead end job and loving everyday. 30's are seriously cool!