Answering your main question: No, WAF can never be overcome.
I am happily married 21 years now and since the moment I wanted to install a medium level audio system, I found the "problem" of the speakers. I bought not my preferred choice and I got my wife permanently complaining about those “things" for several years. Finally my wife designed together with a furniture designer something to "integrate" the equipment and the loudspeakers (white of course) with the decoration. This "original" furniture design was more expensive than the music equipment.
Now, after moving to a new home I am going thru my first serious system upgrade and my approach has been to look for speakers within my budget (white of course) and show them to my wife: it is important for her to feel that her views are taken into consideration.
At the end I have been lucky because I've found a dealer that visited our home and really is interested in design. He offered a nice and expensive Artesania Audio rack (white of course) and also MBL speakers because he thought that the speakers could match our home ¡bingo!
I would never have imagined that MBL speakers would be acceptable to my wife. I have showed her dozens of speakers thinking that my wife could like some of them: fatal error.
What I have learned from this long process is first, that she has to have very clear that music is an important part of your life and you want to listen to in the best possible conditions.
Second, that you understand that your home is a place where she has to feel comfortable, just like you, and you will not force her to see every day something horrible for her in the room.
Third, that she participates in the speakers selection so, look for them TOGETHER THRU YOUR PREVIOUS AND VERY WIDE SELECTION and do not close your mind to any design. But do not let her to search for herself and if you can get the help of a WAF experimented dealer, better indeed.