In the photos, it looks black on my monitor but lighting conditions can cause things to look differently from what they are. You may be correct about it being a tom. If so, it is likely a late developing tom that is not even a year old. I see no spur buds but I also don't see the telltale light colored lower edges on the breast feathers that would indicate a hen.
They just look to big for hens to me. Big head, heavy legs, long legs, etc. I could be wrong. I'm not seeing spurs either. They kinda look like Bronze in the new pics. But a little darker maybe. You think maybe a Bronze X Black Spanish cross?