You are claiming breaking bad made up that old school biker meth bit?

The blue color part of it, yes.

Because their other stuff is all real.

Yeah, not sure how that connects to the blue color, what do you mean?

Maybe you just are not familiar with the chemistry in that old school formulation where the ingredient became controlled so it was no longer used?

I sure aren't, I'm just repeating what the showrunners said, the show creators said they made it up as a plot device.