My DD is 13 and has expressed interest in colouring her hair. I have fond memories of different semi permanent hair dyes as a teen and think it could be really good fun if done properly. However it's been years since I went in the home colour aisle! Also, her hair is sort of dark blonde and I'm wondering if it's harder to find shades for that? I'm not even sure what colour she fancies but can anyone recommend brands or am I mad for considering it? 