ENOUGH ARGUING!!!!
From the USDA...
www.fsis.usda.gov
10. What causes grayish or green color on cured meats?
Exposure to light and oxygen causes oxidation to take place, which causes the breaking down of color pigments formed during the curing process. Chemicals in the cure and oxygen, as well as energy from ultraviolet and visible light, contribute to both the chemical breakdown and microbial spoilage of the product. Cure, such as nitrite, chemically changes the color of muscle. Curing solutions are colored in order to distinguish them from other ingredients (such as sugar or salt) used in fresh and cured meat products.
For example, cured raw pork is gray, but cured cooked pork (e.g., ham) is light pink.
The Gray color quickly turns Red as the now exposed Myoglobin absorbs Oxygen. This Chemical reaction happens quickly and the Gray color can easily be missed. This is why there is an argument and misunderstanding Here. If you are not Specifically looking for Gray, you may not see it by the time the meat turns Red...JJ