In episode 4, when Teito meets Lazet for the first time she looks like a brunette, but a few moment afterwards (something like 10 seconds), her hair color changes to pink without any noticeable reason (and apparently no one seems to be bothered by it at all).
Although I didn't see the whole series, I'd like to know if this phenomenon has been explained later in the series, or has it just remained unexplained?