Well I just wasted $30CDN on fabric and two cans of spray paint to be confident that I don't want to paint my screen. Pictures are at the below link. http://dustin.bunnyhug.net/screen.php Summary: From my testing, grey screens (I should caveat this to DIY blackout cloth, fabric side out, screens) definately improve black levels on digital projectors. But what they do to colors isn't a trade off I'm willing to make. Black levels are good enough on the my 300U that they don't bother me at all on bright scenes, and then only slightly on the very darkest scenes. On brighter scenes the sacrifice to color fidelity of the grey screens was to great for me.