This is term purrely of your own creation backed up by literally nothing in the story... you are creating an explanation that has no evidence and using it as the truth
And on the point of mere speculation, the very panels you yourself sent are literally saying that the battles Ryuma got in made the sword black... ARe you not reading the panels you are using
The OFFICIAL TRANSLATION which has been proven time and again to be WAAAAYYYYYY more accurate than the rest
"Active haki" is a description of Haki being put out by the user of the sword into the sword. Ie, when Zoro coats his swords with CoA.
-I have explained it multiple times now. You haven't addressed my explanation at all. So I will repeat it again, last time.
Mihawk - States covering your blade with CoA will make it a black blade. Which is what Zoro's training was for, which he mastered, hence started drinking again.
A permenant black blade therefore is a blade that has its properties affected by Color of Armament, retaining the properties of CoA like increase in power & durability.
-----
Hmm I haven't made a single post going against Ryuuma making his sword black in any other way. So no clue why you are bringing Ryuuma up as if I went against anything stated about him. Furthermore, all that's stated is he made it black through countless battles, that's not a description of how the blade changed it's properties, but how long it took for it to happen.
-----
If you're looking for word for word accuracy, Jaminisbox would be the way to go. Viz has a tendency to simplify translations.
I posted the viz panel of Dracule stating "turned into a black blade" not "forged". Forged refers to changing shape of the sword, in its actual meaning. Turning a sword black is not changing it's shape.. hence the usage of "forge" in the panel that
@Bogard posted simply means " change into" or "become".