I might be the only entirely opposite opinion. I tried the black and the mustard ones in the store. I actually really liked the Marie for functionality. It was spacious enough. I loved that it was all leather lined. It felt really luxurious inside, but was not heavy. I loved all the pockets for organization. It easily fits an ipad and a notebook. I loved the handle drop - ergonomically that's the best length for if you're carrying stuff around in your bag. This is also a bag I'd feel great taking to work - its not fussy at all, doesn't have any perceptible designer signage. It looks luxurious and you feel great taking it, but doesn't draw attention. I'd take it along with a laptop backpack.
In terms of color, I loved the look of the mustard, but black felt much better in terms of versatility.