Rear projection screens are usually made of semi-transluminescent material, so they do not reflect the light but create kind of a "glow". Depending on the opacity, rear projection screens sometimes even let some portion of the laser beam pass through the material. The color of this kind of screens usually is light grey. Projections on rear projection screens are made from the opposite side of the spectators - the laser projector faces the audience with having the rear projection screen in between, where the graphics, texts, etc. are projected on.