When I first got my Rift a year ago, I had a problem with blacks appearing as dark red. Oculus sent me a spud tool so I could disable spud. It definitely made the blacks black, but it also caused a horrible grid to appear in space instead of dust clouds, as well as other problems. Anyway, several months later Oculus finally corrected their drivers or something and I stopped using the spud tool as it looked better using the standard settings. Sure, if you look for it you can sometimes see the dust layer, but I only notice it if I'm looking for it. I think I'm usually focused past it or just too busy enjoying other things to give a crud about it. But all Rifts may not be the same.