I started to go grey in my early 40's and I tried some colour but the bother, the expense, the time, and the money finally convinced me to go grey. Now I have more time and money to spend quilting!LOL
I'm lucky in that my grey is fabulous and so many people comment on my colour. Many ask if I go to the salon to have the grey put in! Too funny!
Go for it. In the end you can colour if you don't like the result.