It seems as though you do not know fully about the grey jedi
They ARE the balance, at all times, never losing it, most of them don't actually use their anger in combat, that was a form created way further in the years, Mace Windu was the first to make that seventh form I do believe, and most everyone who used it fell to the dark side.
And I ain't gonna be using force lightning since, well, ain't available as a Jedi Consular.
My Grey Jedi is not the regular Grey Jedi.
He doesn't believe in light or dark, like all grey jedi, he wouldn't kill a helpless person, like all Grey Jedi. and there is no such thing as "Greyness" and how much it manifests in a jedi since there is no such thing.
However, from a Regular Jedi's perspective, he leans further towards light side then dark, but he doesn't believe that the Jedi Code is correct
He combines both the Grey Jedi code and the SWTOR Jedi Code to make himself, not many people roleplay this type of a person in my guild so I am trying to be unique instead of "There is no emotion, there is peace." stuff.
If you want to know a little bit more about my Jedi, he was a Normal Jedi for 14 years, so he still has much of the regular jedi code and how they act with him, he dislikes using anger in combat, he mainly just believes in the Grey Jedi code. the "Dark Side" powers he does not understand and he is terrible at, so that is another reason I am not using anger in combat or lightning. he does not know much of those types of combat.