Hmm.. For a colorful fish that will cleanup any leftover food is a bottom feeder called kuhli loach. They come in different species, but i'd suggest kuhli loaches or black kuhli loaches. Here's a video of them feeding, they are very fun to watch during the night as they have late night parties with each other(: I'd say get 3 or 4 if you are considering them VVV. They are VERY shy at first though, so you may not see them much the first week or two. If you leave them be at night, and during the day, they will feel more inclined to come out and will be more comfortable. Especially in a group.
The solid brownish black is the black kuhli loach. The stripped is the kuhli loach.
[ame=http://www.youtube.com/watch?v=0OV9ebb-4CI]YouTube - Kuhli loach feeding frenzy[/ame]
Or a small school of neon tetras. VERY VERY pretty in a school.
Heres a video of a 14G tank with zebra danios.. and neon tetras (sounds...familiar:D )