Seems like Using UV Black Light in Art becomes a tread. Still remember Glowing Murals by Bogi Fabian we featured week ago? Canada government use the same idea and add spectacular design in their new passport issued since 2013. Shared by reddit user Chachichachichicken in an Imgur photo gallery, the passport pages transform from flat parchment decorated with subtle lines to colorful, hologram-like maple leaves, exploding fireworks that hover over Parliament, and a roomful of politicians outlined in neon. The black light sensitivity feature is called âoptically variable ink,â and its function is to change color based on the type of light itâs exposed to. As one Reddit user accurately accessed, under black light, âItâs like a party on every page.â