Simply,l no, there Is no cojecture whatsoever.
Anime Is not a databook, and tbh it's ridicolous to try to put them togheter.
VCs are and official databook, with a different team behind and and a different objective, referred by Oda himself as a canon source.
Anime, for Oda's own words, isn't.
In VCs, the same canon source, Ryo's blade was black. Now, in the official colored manga, It Is black; in the official manga, It was already black twice.
Now, if you want to play the "It Isn't stated" card, you can, I cannot force you to concede even in front of the fourth confirmation, but it's exaclty the same as saying that Sanji isn't blonde until some state It verbally.
So, overall, we are Indeed in this meme:
At most, what can happen Is that we will come to know that Ryo didn't forge It black. That Is possible, as unlikely as I think It might be.
However, the sword Is black, was black in the manga, was still black in volume, was black in VC and Is black now in the colored version. It's exactly the same as any other Kokuto and we It will be talked about, It will be merely a verbal statement about something that we already knew and was already clear as much as seeing the sky we can say that Is blue without the need for someone to verbally state It.
And for me there won't be a real problem waiting, if not for the fact that this Is merely a stalling technique used to postpone years in the future the confirmation of something that only needs functional eyes to be confirmed.
Anime Is not a databook, and tbh it's ridicolous to try to put them togheter.
VCs are and official databook, with a different team behind and and a different objective, referred by Oda himself as a canon source.
Anime, for Oda's own words, isn't.
In VCs, the same canon source, Ryo's blade was black. Now, in the official colored manga, It Is black; in the official manga, It was already black twice.
Now, if you want to play the "It Isn't stated" card, you can, I cannot force you to concede even in front of the fourth confirmation, but it's exaclty the same as saying that Sanji isn't blonde until some state It verbally.
So, overall, we are Indeed in this meme:
At most, what can happen Is that we will come to know that Ryo didn't forge It black. That Is possible, as unlikely as I think It might be.
However, the sword Is black, was black in the manga, was still black in volume, was black in VC and Is black now in the colored version. It's exactly the same as any other Kokuto and we It will be talked about, It will be merely a verbal statement about something that we already knew and was already clear as much as seeing the sky we can say that Is blue without the need for someone to verbally state It.
And for me there won't be a real problem waiting, if not for the fact that this Is merely a stalling technique used to postpone years in the future the confirmation of something that only needs functional eyes to be confirmed.
Can we debate Kings wings ? The creator came out and corrected the anime.
Can we debate Sanjis hair color ? The creator himself stated Sanjis hair color
Can we debate Shusui color ? Ryuma stated the fame of Shusui and it being a black blade.
So again those are confirmations not biases not conjecture/speculation.
What is your argument exactly besides "trust me bro" the bet is simple when we get a confirmation i.e. character statement, Oda statement, or datebook confirmation its conjecture. (BTW If Oda came out and corrected the anime staff and mentioned that Aramaki's sword should be black I wouldn't argue at all cause that would also be confirmation like Kings Wings)