Yup yup... But I'm no hater, it's just rare for me to see this especially in a manhwa.

That's what I'd call someone dyed his hair. I mean, most of the characters in a manhwa, when they dye their hair even their eyelashes and brows are dyed too. I know it's to match the color cause it'd look uneven if not, but at the same time it always take me out when even their lashes are dyed HAHAHAHAH. The prince here dyeing his hair black except other hairy part of his face are what makes the uneven suit his disguise