Hi tof, That`s an unfortunate situation, but I reckon John will do his best to sort something out between you and the factory --- I guess things can sometimes go wrong with the best will in the world, and with the volume of units produced, occasionally one will ``slip below the radar`` ---I would think in the meantime, [forgive if I misunderstood all of your issue] could you colour your own hair to match the unit a bit better rather than trying to colour the unit? I guess colour issues are more apparent on lighter -coloured hair. My own is a very ``odd`` colour --under certain [natural] lighting conditions, I can see a difference between the unit[ which is a 1b, or ``off`` black] and my own which can be kind of copper - black shade. I have to frequently darken my own hair to minimise the appearance. This is never going to be an exact science, and as you acknowledge, the hair quality etc. in general is excellent --- I`m sure John will be able to sort something out on your behalf --best regards, Paul.