I'm so jealous of those of you with no grey hair - I started getting grey hairs when I was still in my early 20s in college.
Other than a few months towards the end of our year in Korea (because I was too scared to get it colored there), I haven't had my true natural hair color since high school. I've always had some kind of highlights or color going on. Naturally my hair is a really really dark brown with subtle red undertones which doesn't do anything for my pale skin tone. So I dye it mostly to richen and warm up the color so I don't look like a ghost (well and cover the greys now).
Lately I've been doing various shades of auburn which I really love.