Nullarbor ochre is the only real brown Dingotone - and that's not a reddish brown - maybe try a Feast Watson Jarrah or Mahogany stain? Just need to be careful with the Feast Watson stuff - smell is pretty toxic and it eats gloves (i.e., goes straight through nitrile gloves). If you're working with the boy - make sure its well ventilated. Not sure what alternatives exist at the moment.