Ariel is a multi-colored fan. Or, I glimpsed that she was kind of that way...from her personality.

^ I agree with that but I picked Red because I think it would be the color she gets to see the least in the ocean but also a color she identifies with herself so I think she'd have a bit more love for this color maybe than others.

I actually think that her favorite color is turquoise (color mix between green and blue).