It works on any wood, works especially well on pine. It really soaks in and looks very natural unlike some stains. Most of the weathered wood that I see/match is pineThe steel wool and vinegar mix works best on high tannin woods like oak. If it is a low tannin wood brush on a coat of strong tea, let it dry. The tea adds tannin.
As rough as that wood appears to be, I would seal it with Seal Coat first.
For the black I would use Trans Tint black diluted in DNA. For the brown I would use Zar Chestnut, it has no red undertones.
Ha Ha what ever you say Tom, what ever you sayWithout tannins there will be no reaction. Try it on maple.