>>527786250
>>527786338
I can only guess you picked Indigo Elder because the only thing that connects the two is that Gregor is the oldest male sinner on the bus, because nothing else about them, neither theme nor background, fits. It's taking it really fucking literal, and not at all intuitive.
There isn't a color that fits Gregor, at least not yet. You should just abstain from from including him rather than thy and shoehorn him in where he doesn't fit, at least if you want your list to not look really fucking stupid.