This meme doesn't work ...
vivre cards show one thing - not denying it appears to be a black blade which could be true, we don't know, or it could be something else if you're going to cite the vivre cards from
Shueisha then we can also cite his official character page from
Shueisha which doesn't show a Black Blade.
Oda didn't correct it like he did with Kings wings (
which is pivotal to the story) so at the moment its all conjecture until we either :
A:) Get a direct statement from Oda (
SBS)
B:) Get a direct line from a Datebook that he has a Black Blade.
C:) Get a direct comment from Aramaki himself or a character commenting on his sword.
https://one-piece.com/character/Aramaki/index.html
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.