Gray swamp wood/Petrified wood/charred wood

I think there should be gray/black wood, so that doors, trapdoors, fences, etc. can be added to stone-themed builds without standing out. Two ways that I think the gray wood could work are by adding petrified wood, or by changing swamp trees to have gray wood instead of oak. Maybe even both of these, with one having a darker gray than the other. I especially like the idea of petrified wood, as it would be mined with a pickaxe, meaning that you wouldn’t have to switch between an axe and pick when adding the petrified wood to stone builds. I also really like the idea if having a biome filled with petrified trees. As for black wood, I think that logs should be able to be charred. My logic is that charcoal exists, so why couldn’t we have a block with that theme? I have 3 ideas for how charred wood could be collected: 1) Logs are smelted in a furnace, turning them to charred wood which can be crafted into charcoal. 2) 4 pieces of charcoal are crafted into 1 charred log. 3) logs become charred shortly before being destroyed by fire.