Probably boys, however I've learned watching my own Salmon Faverolle grow up that there's a lot of sloppy breeding from hatcheries, and and one of the things that suffers is the coloration. There's been a few folks on here who've ended up with females with black on their chests. Mine has a bit of black throughout including a little on chest. So I'd give them a couple more weeks.
This is an old thread, but one of many with examples of poor colored Faverolle pullets https://www.backyardchickens.com/threads/meyer-salmon-faverolle-pullet.918303/
tinyurlis.gdv.gdv.htu.nuclck.ruulvis.netshrtco.detny.im
