^Much better naman talaga ang grey screen compared sa white screen. Black level will improve sa grey screen, it also performs a lot better in rooms where ambient light is present.
Bad thing with grey screen is that the white color will look "dirty white" and all the other colors tend to be dull.Kaya sa Silverfire DIY paint screen they use "white fusion" at the innermost coating of the translucent grey screen to reflect more white light back to the viewer so that the whites will look whiter instead of "dirty white" all other colors will also look more alive.
If you plan to go with grey screen route, you need to increase reflective elements on the paint mix so that the screen gain will not be affected as grey screen tend to absorb more light.
Additional: The grey paint mixture should NOT be opaque. It should be translucent to allow white light to pass through the grey paint until it hits the white inner undercoating (ung white paint lang sa pinakaloob ang opaque). Imagine painting this on a clear glass and shine a flash light through the painted glass, dapat may konting light pa nakakpenetrate through the painted glass. To achieve translucence property is add neutral satin-finish paint.
