We don't know the sex of our baby either and decided not to find out so we have gone all neutral also. The walls are a cream colour and the roof is white. We too have the walnut colour Boori furniture and we just put brown curtains up to match the furniture. We have the Whinnie the Pooh theme (cot set, blanket, floor mat etc). I think this is neutral, however, once the baby is born I would like to get another set more specific to the babies gender (ie/ butterfly's - Girl or Trains / Boats - Boy).