Why does Lazet's hair color suddenly change? 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?
Because


   She is not a human, but a Noel Mermaid, who has an ability to change their face's appearance. Her original face is the one with pink hair and eyes.


So, when Teito met Lazet,


   She mimicked Teito's face: brunette hair and green eyes.






References:


07-GHOST Wikia: Razette