I'd adore a dtvt, but I know those aren't too common. I really like the koi marbles, which I think Mickey was. I miss that fish so bad =( I like pinkish-reds, oranges, and blues, but I really enjoy a fish with a good blend of color and pattern. My Ryuu is my male VT and has crumpled fins from being in his cup too long before I got him, but the blue into green into orange is just so beautiful!
The only thing I'd say no to is a melano black or solid red =P Not a fan of those. And prlly'd say no to a pastel multi, but I'd have to see a picture to verify that.
Otherwise I'm pretty open-minded about them.