I went with a Neon Brindle base and Calico markings with a koi collar and a fish dangling from it. (I would have done a koi, but it's a bit small for that)
It's hard to see the neon brindle, because it looks horrible overly saturated so I diluted it a bit, but it's the same colors as the tail (blue by the face, green along the body and yellow for the legs)
I hope you like it.
As for my own preferences, just have fun and try to avoid pink in the design. Honestly, I'm not picky, and the more fun you have making it, the more likely I'll enjoy drawing it :3