Update! I am now totally natural! A sort of silver colour, and absolutely loving it! (BTW, will be 60 in August, but having been battling the grey for many years, see previous posts)
Apart from no longer being a slave to the dreaded "roots" (my hair grows like a weed!) I am suddenly able to wear colours of clothes that previously would have been completely out of the question with red hair.
I now have a lovely mustard coloured tunic sort of jumper and a violet long line sweatshirt, both of with would have been a definite "NO" with my previous red hair! 
Yes, after many years of the dye bottle, I have embraced the grey, now just have to come to terms with the cellulite and wrinkles 