A friend and I were looking into getting some Lantern Corps Rings from a really cool design site. During the discussion of which Corps to "join" my friend said he would probably fit well into Sinestro Corp but doesnt like the color yellow and joked that he would use a powder coat technique to recolor the ring. Which in turn made both of us wonder: if the rings are fueled by emotional energy would it still work correctly if you were to paint it or powder coat or electrolyze it? The yellow impurity in the green rings was in the main powerbattery on Oa, not a cosmetic paint job.
So, would recoloring the outside of a ring change the way it works?