Three things, Bronze is a color, I have not run the calculator on it but as I recall the siblings need not be the same color with bronze, as with most colors.
Secondly I still think it is a bronze. I checked on Porter's before I said it was a Bronze to make sure of myself. Nothing has changed my mind yet.
Thirdly, Why do you ask these questions here if all you are going to do is disregard any answer we give you and stubbornly hold onto your beliefs which have been wrong more than right? Just saying I am wrong or showing a picture and saying it is not discussion. Telling me concrete reasons you disagree is. Explaining your thought process would help.
Just barreling through life with a chip on your shoulder and telling people they are wrong will not serve you well in the future.
Sorry, if I sound surly this morning, I guess I kind of am.