I have a problem with the way this quote reads. I take from this quote that "true oxblood" can only be made using the MFC/Akro formulas, and that any other way is not a true oxblood. If I go to the paint store and buy green paint from 3 different suppliers, are they not green? I'm sure they all may have the same color, but I'm also sure they may have reached the final color point via different chemical makeups.
Oxblood is a color term made up by marble collectors to name a certain color. If you can find any marble literature from the mid 1700's on that has the term "oxblood" used to name this color, I'd like to see it.
Final colors in glass have many conditions that need to be perfect to repeat the color on a regular basis, especially reds. Who is to say that MFC/Akro didn't screw up the batch of cherry red during a run because it rained hard for a week and the red "browned" out.
I'm not trying to find fault with these posts, only just like opinions, there are many ways to get to the final answer. Are all correct? Are a few correct? Are they all wrong, but decent guesses? You must decide for yourself and make an educated decision.
Lou