Because swords have been
established to have only 2 colors:
White = regular steel [default]
Black = haki/permanent black blade
There is
no other color that blades can have other than black
And there has
never been an instance where black haki shading means regular steel color
When turned black, they also
gain hamon teeth in the middle of the sword
Which Aramaki's sword also has
So your
pathetic cope about "different color" doesn't work because:
- swords have never been any other color
- regular swords don't have hamon teeth in the middle
Black and white meaning other colors in clothes has nothing to do with swords, you pahetic brainlet. Clothes can have variety of colors, swords in one piece only have 2 colors.