interesting. I will have to remember that . One of these days I am going to make some prints with AZO. One of my dealers gave me a box of 5oo sheets of 4 x 5 paper.
I have used the bluegold toner after using hypo alum toner and the results were interesting. A cross between orange and red. Not as ugly as it sounds, but different. Was running some test for a project and thought , wonder what this would look like. The paper was Forte polywarmone plus. Didn't use if for the project but kept the print for an example for my students.