Okay, these people are clearly neglecting the fact that anime ≠ real life. (And from cosplay.com, why does that not surprise me?)
It's very difficult to shade black hair in an art style that uses black line. Using dark shades of grey as a "black" color makes everything look desaturated, and you can't use a solid #000000 black because the detail in cel-shaded art is achieved 90% of the time through line, and the rest of the time through highlights. So excuse Sunrise for wanting the details of their protagonist's hair to be, y'know, actually visible and choosing to go with a purplish/redish "black" some of the time.
His hair is obviously supposed to be black, or if not then very, very close to it. =_=;
(no subject)
It's very difficult to shade black hair in an art style that uses black line. Using dark shades of grey as a "black" color makes everything look desaturated, and you can't use a solid #000000 black because the detail in cel-shaded art is achieved 90% of the time through line, and the rest of the time through highlights. So excuse Sunrise for wanting the details of their protagonist's hair to be, y'know, actually visible and choosing to go with a purplish/redish "black" some of the time.
His hair is obviously supposed to be black, or if not then very, very close to it. =_=;