The best looking speakers

Just on looks since I have not heard either...
Totem Tribe Tower (almost disappear but interesting when seen)
Tannoy Prestige Gold Reference series (old world furniture grace)

My wife said my Soundlab A1s looked like body scanners! 

Love the looks of the KEF Blade

As a start, you might invite your wife to flip through a few audio magazines with you.  Hopefully you will start to home in on where what she likes and what you want overlap. 

Duke

I love the look of the timeless classic box designs (as long as they're no darker than maple/cherry to rosewood - no zebra sriped ugliness please).

Big Spendors, JBL L100s, Tannoys, etc all look good to my gaze.

The Harbeth SLH5s stand out for me. Their grille and particularly their geometry just looks damn near perfect to my eyes.

However as beautiful as these designs look, the perfect loudspeaker for me would ultimately be the invisible loudspeaker - and I'm sure my wife would probably agree.