I'm not sure if it "counts" if it's an ensemble fic that includes non-chromatic characters. (This is a challenge for me generally, in all of these challenges to write more female and chromatic characters. If you have a story with several leads, does that "count"?)

We've included ensemble fics with non-chromatic characters on the masterlist as long as the chromatic character appears fairly central to the story in some way. Admittedly, the lines for inclusion can get a bit fuzzy, and in those cases, it is really your personal call on whether you feel comfortable labeling your fic as "chromatic"--I think in some ways, the mere act of labeling meant that the writer has at least thought about the issue, which is in the spirit of the challenge.