the blue dial as the first option and the white as the second. However, to the white dialed one I would take a shiny navy blue strap. For the watch I would buy the ladies folding clasp with Calatrava cross and order the strap according to the measurements. The original buckle I would use for a second party strap: a white one for the blue dialed watch and a black one for the watch with white dial.
I wouldn't take the brownish version just for the simple reason that my wife does not wear frown or beige clothing.
Just check how your lady is dressing and that tells you which dial color is the right one.
Best, Kari