According to Mosher in Radical Brewing, there was a darker form of witbier called Peetermann. More popular than witbier, 1045 instead of 1036-1042 for witbier (maybe historically rather than now). Double the hops, no oats, slaked lime in kettle, six hour boil. :blink:
Hope this helps. Maybe something to start with but, hey, these are Belgians, brew what you think would be tasty. :super: