If that was the only consideration people took into account when buying most things for their home then the world would be a little different. Same as cars, clothes, and many other things. That just isn't the case.
Regular, cheap mass market appliances don't "go" with anything. Deciding what colour they are is really just a personal choice, but makes little difference. The only thing you can do is try and match all the appliances themselves, but that might even be worse.
Vintage appliances can
make a statement in a kitchen (as well as save money and possibly have better build quality)...serious
"pro" or exotic appliances can make a statement in a kitchen as well. But your everyday pedestrian appliance is going to look...pedestrian...any way you do it. The only way to "match" your kitchen, is to have them built behind matching cabinet doors.
What I did when I was designing a kitchen for my open loft years ago, because I A: couldn't afford to instal the serious expensive stuff. and B: didn't want to look at a stove or fridge, was to use inexpensive appliances, but have them fitted to match all the cabinetry doors with an inexpensive conversion kit (at the time, for euro aplliances)...that way all you saw was a wall of nice maple cabinets. To make a "statement", I decided to use heavy duty polished stainless marine cleats as door handles.
But at the end of the day, this person seems to have "resale" as the priority...so my advice is to stick with what the unwashed masses want.
So buy the fuking stainless appliances.