Yeah, I omitted the red and blue part, but what I was getting at is the fact that Auto Wax holds the patents for the idea and formula for clay bars used in detailing. That means no other company can make clay bars without an agreement with (and fee, of course) and permission of the patent holder. Auto Wax has levied and won three lawsuits to that end (against Mothers most recently).
Now, I am sure that companies have contracted for these bars to be sold under their own brand name and have even asked if the color of pigment can be tailored to their product line (don't let the color fool you!). Color is easy. I would bet they can tailor the grade of clay also, but I am leery of that as it would surely incure an increased cost (materials and time). How many grades of clay do you really need anyway? At some point the finish is beyond clay. I say the two grades are it.
I'll quantify all this by saying that I have only used one clay bar, the blue ClayMagic. I just thought this was very interesting from a cost perspective. How many overpriced clays are out there that are simply the repackaged ClayMagic bar? I've read that some of those different packages carry the same patent number information. It's similar to all those re-packaged PCs that are sold for $50-$100 more (Griots, Meguiars) than the regular PC 7424 or 7336.