A few days ago I reviewed Fractale the Complete Series. Great new anime from Funimation, out now. The problem I had with it is the box art looked like it was a Chinese knock-off and I questioned why people's hair colors didn't match up. As I thought it's just the original art from the Japanese release. I asked Funimation about it and there response was, "This artwork appears as it was given to us from Japan. We did not edit the artwork in anyway."
So it isn't an error as I thought, the Japanese publishers just left the orginal early art work from the series as the cover, which I think is a bit lazy.