Yes, FIRST, go to Included, Nature, Bryce skies and select the Background prop, so you have the correct prop to put materials on., Then go to your Materials folder in the same runtime (Included) and select the same subfolders: Nature-->Bryce skies. They are all there. THEN you can change the lights from the Lights folder to make sure you get the exact effect with the same name for the Lights. Just make sure you click the Replace checkmark (the single one) and not the Add checkmarks (the double) so you don't pile on the lights.