You do realize that different ratios create different shades? So what I'm implying is realistic. Yet here you are still trying to find ways to argue against that, strange right? The mixture is also stirred by the Dwarven forge. It is possible that things didn't get evenly distributed or the mithril bonded in different ways.
I never said shaping of the rings changes colors. That is what I've been calling the goof. How many times have I told you that yet you still ignore it to create an argument in your head. I haven't ignored any claim I've made. Lmao. Of course the color change could be magical. The rings themselves can turn invisible so why not color as well?