stop dying my hair

Ive pretty much not dyed my hair now for a while, its good for my hair but looking a bit strange…

My hair is reddy-brown naturally, its been black, purple, red, blonde, pink, blue, orange, black again, natural for a bit and then black again. Now Im fed up with black, my hair is really fine, so i want to stop damaging it and using horrible chemicals.
Plus I quite like my natural colour, I think i was just bored….