I have a blue Springer Damsel that is always out. Beautiful solid blue color and doesn't bother anybody.
I got one of these for the very purpose of adding movement through my tank, and I love him. Beautiful color, outgoing, swims out in the open, not aggressive. Granted, he was the last addition to a tank ruled by a female ocellaris clown (who has a mate). I also have an orchid dottyback, a yellow watchman goby and a lawnmower blenny.