Definitely a silky mix, he has the silky walnut comb. Looks like a silkie crossed with a sultan, which explains the crest and feathered legs. He's really pretty!
He looks a lot like polish/silkie crosses I've had. For some reason the roosters from silkie crosses end up with those vivid orange feathers, even if their parents had no red at all. These were a cross between black silkie/WCB polish.
This guy is a polish/silkie crossed back to a silkie.