BTW:  I was asked "what else I have up my sleeve"  and I had an idea tonight.  If all goes well, it will be something that will make a train seem to fade into the shadows entering a tunnel - even if shadows are turned off.   (It will only work if you are outside watching it go in - my true motivation is to obscure the vanishing and appearing cars in a Portal.)
Sunday is a no-trainz day, but I might get to it Monday....
				
			Sunday is a no-trainz day, but I might get to it Monday....