Her canon hair color is Black as well as her Eye color but it's very inconsistent in official media especially in the mobile game.If you want her navy blue hair and eyes you'll HAVE to add it in the prompt. This also applies to her skin color it must be specified with "dark skin" or "tanned skin" . Works at most weights without issue recommend closer to 1 i.e 0.7-0.9.
It was Interesting to try and create a lora from a character with so little media