Things take a turn for the worse in the second chapter of the Heroville storyline, by Casey, Aucoin and Stanisci, in Adventures of Superman 615 (June 2003).
The Hollow Men cut a vicious swath through Heroville, de-chromatizing most of the population.
Superman tries to stop the Hollow Men, but gets trapped between them. They begin to de-chromatize Superman, so we get to see how this feels to one undergoing it, but the doctor intervenes with a flamethrower, burning the Hollow Men. They will reform, but it gives Superman an opportunity to get away.
One of the few people from Heroville who has not been affected is Kid Scout, who volunteers to find Benjamin Conrad, the author of the book in which the Hollow Men were created.
The story concludes in the next issue.