We have a heavy plastic tarp w/ grommets.  Brown on one side, Pewter on the other side.  Can I use this to cover the top of the run to provide more shade?  Should I put the pewter side out or in?  I don't want to make it hotter.  I ordered a mesh shade tarp, but it is not here yet and we will be out of town for the week...and the entire week is supposed to be high 90's.
	
		
			
		
		
	
				
			
	
	
