#128Holographic Foil

A rainbow-foil sticker caught at an angle. A tilted projection axis turns thin-film interference into diagonal hue bands that crawl slowly, as if the sheet is rocking under a light. A broad specular sweep travels across on its own axis, lifting the luminance only along the band it passes and nudging the interference order so the hue tilts with it. Fine micro-grain scatters tiny glints across the surface. Refined, not gaudy: the colour is real thin-film reflectance folded through the Oklab ring.