Hi xcvq -- I know cameras are notorious for making things appear differently when it comes to systems, especially colour....I can really see the ` brown` hue on the system..your own , however looks almost / verging on black [though you say it`s a shade of brown]..even your facial hair is black [looking] I note you say you have a little grey hair [and again---the camera makes it look like there`s more than actually is ] ----- I had similar situations to you in my topper days..... I simply got black colour [ Koleston perfect colour and Creme peroxide --- you can get them on Amazon etc.] I ` treated` my growing hair for maybe 10 mins. max and the system for literally 3 minutes [system hair grabs colour very fast and deeply] with the same ` batch`/ mix and it worked for me .. I`m not overly keen on ` brown` as a colour .. I found that by this method, initially it looked a bit ` stark`, after a few washes, it lightened a bit --the system matched my own hair very well by doing it this way.... I can`t make any cast-iron guarantees, but I was happy with it...... might be worth a try ?
I can give you the colour-number to order if you`re interested/want to chance it !