Hopefully that proves to be true, because that means mine is correct [emoji2]Currently I can't double check that because have no after market panels. But getting an original BB "Kürbis" very soon. So I can check when arrived.
And another idea: As far as i know the original BB has different polarity on left and right side. So the panels don't fit upside down. So simply try to mount the panels upside down on your black one. If not possible, the after market panels should fit.
But there is no guarantee