brown is another 'neutral' color that works with black and white scheme. Would be helpful if you can provide photos or links to the samples you have chosen.

Warm and welcoming!

Once you go white (which I think is a great idea) you might find that the existing handles look good. If you want to change them I would suggest handles that are consistent with the period of the house/kitchen. And, I would keep them simple based on the design of the cabinetry. :-)

I have just bought a schweigen with motor on the roof. The best information and help that I got was from the installers. Parex Industries are the NZ importers, but I must say the only help they gave me was the phone number of the installers. I just tried to find it for you but can't. They are brilliant to talk to and get advise from. I spoke to them before I purchased. The one thing that I realized is the installation is one of the major factors. Give Parex a ring and get installers number will be your best bet, all the retail outlets did was provide conflicting information.