For some reason everyone except Fisher has stopped making D1 sized refills in black they only make them in blue now. This goes for Inka, Tombow, and Schmidt.
Does anyone know of any source that still has Tombow, Schmidt or Inka pressurized refills in black? I tried a source in France but they ended up sending me ordinary Tombow refills instead of pressurized XPA ones.
In the meantime Batteryjunction, Penwa and the like sold out of the black Inka refills they had left.
As for Schmidt’s megaline D1s it is impossible to find them in black outside of Germany.