Don't forget her leather watch. Best one is a HT Royce watch, the strap can stay brown but the watch itself needs to be silver so you'd have to paint it.
Yeah I don't know much about dyeing. First time I did was to make RE3 Jill's tube top darker ended up staining the body, which luckily it came off by using Tide Bleach pen. But for you that's an expensive outfit so I would be scared to mess it up.
Mmmhmm I agree with Krec, look at RE3 for the remake her top looked darker in the game. The game is dark, creepy atmosphere. It looks fine to be honest.