The Batfamily and their Lantern Rings
Bruce: Yellow. It’s been shown in canon that Bruce is unable to use a green ring because he can’t bear watching the loss of his parents—in fact, he’s barely able to interface with a green ring at all. He has, however, shown himself capable of using yellow. Fear is what drives him: fear of losing those he loves to random violence. He takes that fear and turns it outwards, just like a yellow lantern should.
Dick: blue. He’s the hope of the Batclan, the one who keeps them all going when they want to stop. I feel like this one is fairly obvious.
Jason: Green. This is a child who saw the BATMOBILE and decided to steal its tire. And when Batman confronted him about it, tried to hit him with a tire iron. He dug his way out of his own grave with nothing but his hands. His fears are overcome.
Tim: Indigo. He became Robin not because he needed it but because Batman needed him. As stated by N.O.W.H.E.R.E., he could have disappeared as soon as they began hunting teen metahumans, but instead he put himself at the front of the fight by organizing the Teen Titans. This boy bleeds compassion.
Damian: Red. Smol. Angery. Fite. Nuff said.
Cassandra: Star Sapphire. Okay so bear with me on this one: what saved her, and what drives her to save others, is family, and love of family. She’s not a romantic Star Sapphire; she’s a familial one.
Barbara: Green. She’s been a freelance vigilante since she was TEN. She lost her f**king legs and went, “okay, I’ll just conduct the entirety of the Batfamily’s war on crime from my apartment. Oh, more vigilantes? Sure, you work for me now.” Ain’t nothing can stop this woman.
Stephanie: Blue. Her father’s a supervillain, and she knew that wasn’t going to reflect well on her and might even make the other Gotham vigilantes reject her, but she knew she had to do SOMETHING. She believed she could make a difference, in spite of the odds.
Luke: Orange. Im primarily basing this on the characterization of him in “Batman: Bad Blood,” which was a truly terrible movie, but one thing I do remember about him was when he saw all the bat-tech his father had squirreled away and pretty much immediately went “I WANT.”
Kate: I don’t know her all that well, but I’m gonna go with red?
Duke: indigo. He cares about people he barely knows, people he’s never even met. He integrated into the Batfam almost faster than Damian did, because he can empathize with all of them better than a lot of them can with themselves.
Alfred: Also indigo. Batfamily triage, emotionally and physically, and he can channel the other colors by understanding them. Puts others’ needs before his own.