I hate to be the critic here, but I know my Love Hina, and these colors are all wrong and pasty. Mitsune's (Kitsune) hair is not blue its light brown, the shirt she's wearing is easily recognizable from the series, and it is also brown/tanish with small red stripes, her shorts, also a darker brown, and Naru's outfit is not black and white, its shades of blue I believe.
The only thing you got right was Naru's hair color. That came out good. Since that cat is not from the series, who am I to say what it looks like and what color it is?
Overall, I have a question for you-
Do you even know anything about Love Hina? Because all of these mistakes could have been avoided if you were paying more attention or actually went to look for some pictures from the anime (since the manga is primarily in black and white save for covers and back covers)
The thought and gesture was very nice though, and that stands for something. 🙂
Also, I third the notion, that you should ask an artist before you color anything of theirs whether you know them or not. Its just common courtesy.