This mirror replaces broken or damaged hologram reflector mirrors. Do not overtighten. Thick acrylic mirror polishes easily.
This one is green, and we recommend it as it definitely sharpens the image. The green tint reduces unused spectrum from the lamp, reducing unnecessarly light that hits the hologram. The efffect is of a sharper, greener creature. Note that this mirror cannot restore green to a blued hologram, but it makes any green remaining look better.
Check out some pictures here and here.
And more on the hologram.