well, she wouldn't necessarily be all " grungified" as Sushi would put it, depending on the TL - star trek engineers seldom got dirty for all their crawling around in jefferies tubes because they weren't doing anything that actually got them dirty - changing out optical relays and modules doesn't get one too mucky. Of course, all that changes when you're working on mechanicals, where lubes, tailings, and grease occurs. That's why Kaylee on Firefly always had a charming smudge or two!( I never reckoned the Serenity at better than Tech 11 at best and it was always stated she had " been down the road a bit")
But that's not to say I wasn't thinking along the same lines - what you see here is a rough pencil, and is far from completion. There's much still to be done!