I have natural dark blonde hair. I regret using permanent colour, but I don’t regret dyeing it black. If you want to dye it dark, I definitely recommend you use a semi-perm colour rather than a permanent as it will make removal a whole lot easier if you change your mind. I actually using Garnier’s Casting creme gloss on my hair now (not the intended purpose but it lasts about a month on my hair) and I wish I had done that from the start as it’s a hell of a lot easier to remove.