Yep I have changed. Early-mid twenties I had either fully blonde or blonde streaks and lots of them. When i had the kids a block colour that didn't need redoing too often was my preferred choice (so near enough to my naturally mousy brown colour). Recently I redid the streaks and god I looked awful. Washed out and blah...
Now though I'm a bit more daring on the colour and since salons are prohibitively expensive here I've gotten quite good at doing my own...something I would never have dreamed of before.