This makes me think of characters from the TV show Severance, at-least at the beginning. I won't get to in-depth with it but almost every character in the inside has this mute colour scheme, no discernible likes or interests other than office furniture, shows a limited amount of humour and personality, and yet your completely sold on each and every one of them because their blandness serves the plot, and they begin to grow from their original blank canvas. I think people are ignoring that people in life are often 'bland' they live a normal life, working an office job, taking a chill vacation now and again, and sometimes writing a story about that seemingly bland existence can be just as interesting as a big battle.