Hi person ..you`d most likely find that to be a bit onerous to be honest ... almost from day 2 or 3 of colouring it black, it will begin to lighten again from shampoo etc ... you`ll then be constantly checking/ paranoid to see if there is a noticeable difference between it and the system hair and having to frequently colour it to match the system ..it`s a lot more practical to try to just get the system to match your own by ordering the correct colour ..it will save you a lot of bother really...... just send in a good-size sample of your hair with your order ... you`ll have enough things to be learning and `dealing` with as a new wearer, without getting eye-strain from the mirror ! ;-) Paul.