<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Ukudlula: Izinto ezisetshenziswayo zifaka phakathi i-ochre ebomvu nephuzi, i-hematite, i-manganese oxide namalahle. Ngezinye izikhathi isithombe sesilwane sasiqoshwa edwaleni kuqala, futhi kwezinye izimbobo zonke noma eziningi zezithombe ziqoshwe ngale ndlela kuphela, zize ziphume ngandlela-thile encazelweni eqinile yomdwebo wasemhumeni. Umbuzo: Imibala ebomvu ne-ochre ivame ukusetshenziswa ezintweni ezenza umbala?  <response>: ophuzi 