I would suggest keeping the black sinks and tying the black and white elements together with wall tile that has a black and white border near the top edge. For instance, wall tile in beige or a pastel would contrast from the black and white items in the room, and a black and white border would make the fixtures stand out. I have white sinks and a white tub, and they have to be cleaned every day anyway.

white sink.. seen too many dirty looking black sinks

Good grief, just noticed the date

@sheilaskb has been resurrecting ancient threads all week.