His hair

Then why did he go through the trouble of painting it black/brown like mentioned in the earlier chapters ?

bc which young man had a head full of natural grey hair. it would have drawn him attention and clearly he wants to live quietly ykkk

Probably cause it stands out too much maybe? Tbh I wouldnt blame him if my black hair went completely platinum white

It stands out too much

I can't remember exactly, but like the other commented, I think he mentioned how it stood out too much while he was dyeing it brown in the earlier chapters. Or maybe it was when some of the grey started growing back out...can't remember

Yeah if somebody already knew how he looked like but how can he standout when he always wore a mask and nobody knew his identity (plus people can have weird hair colors these days )