Chili Monsta said:....wondering why you might have an issue with the "grey" description for the stage of cooking...would you feel better if it was referred to as medium rare cubed meat?...its about the same thing....
LOL!
Just because: https://www.google.com/search?q=graying+meat&rlz=1C1CHFX_enUS525US525&oq=graying+meat&aqs=chrome.0.69i59.9671j0j4&sourceid=chrome&es_sm=122&ie=UTF-8
And that's even searching the verb, as in "graying" it like you said.
Gray/grey = bad meat to most people.
I understand what you mean and it's no biggie!!!!!!!! I personally just like the term color or browning better.
Any recipe I have ever seen that calls for ground beef to be cooked in a pan first says to brown it.