Not everyone's natural colour suits them. *cough*BorisJohnson*cough* However, before you write it off completely, consider how long you've had it dyed for. Natural colour changes, especially when you're a teen: one of my friends was mousey brown when were ten and now her hair is a wonderful rich chestnut and yet she's never dyed it. It's very possible that your natural colour has changed and you simply haven't noticed.
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Only 15% of people admit to owning a dead conifer.