Personal take, as much as I enjoy the aesthetic I don't really get why so many people draw the Magnus Protocol characters so punk/alt and cool looking.
I've worked both night-shift computer jobs AND in small government and the only flavors those comes in are definitely "do not perceive me", "respectable comfy", and "I am very Important."
Alice is the comfy type, she's been in this job so long she doesn't care and is focused on being comfy. The most fashionable I can imagine her getting is tucking her over-sized sweater in to her jeans. Probably wears converse. I could see her being a fun makeup type girl though, a pop of color smudged on her eyelids with her ring finger on her commute ride on the tube.
Sam is new, he's still at least trying but this is still a polo and slacks type situation. Clean tennis shoes at best after wearing his good leather shoes on his first day. His hair is neatly combed, but not what one would call "styled."
Collin is late night IT. I have been late night IT specifically. He is the most likely to be wearing a t-shirt with a dumb phrase on it and get away with it. Hoodies. Jeans with faded knees from crawling under desks. Occasionally sweatpants if he's having a real bad day. Hair long enough for a ponytail, or messy and short. Dirty sneakers.
Now Gwen is a climber. She over-dresses. She has simple jewelry, but it is real gold. Her hair is tied tightly back in a bun, french-twist, or mid-height ponytail. She wears sensible, but high quality shoes, occasionally a small heel. Skirts, slacks, button down shirts and form-fitting sweaters. You wouldn't catch her dead without her no-makeup makeup.
Lena is government management, even if she is night shift. Business casual all day every day. Voted most likely to wear a blazer. She doesn't wear much jewelry, but that is most definitely an expensive watch on her wrist and it is set to International Atomic Time. I personally imagine her with glasses, but that's mostly so I can picture her staring down Gwen while looking over them.
I guess these designs maybe aren't as fun? But a lot of the more flamboyant designs would totally break my immersion, cause having been there, no one in those jobs dresses like that heh...