The colour really suits her, I'd love to find something similar too, I hope you're successful in your search Lindsay, it does look perfect for an office wardrobe.
it's a shame you're not finding GB more exciting, in the clips I've seen Michelle does sound as if she's got the accent right, but as you say it probably wouldn't be worth watching if she wasn't in it.
I found another clip of her talking about Sense of An Ending.......
https://www.youtube.com/watch?v=z-Ng_Ydrekk