Optically Interference Variable Pigment: a multi-layer interference film with high specular (mirror-like) and specific color characteristic, manufactured by deposition of ultra-thin layers with different index using accurate physical vacuum deposition (PVD), is ground into micro-sized effect pigments. Based on multi-layer thin film interference and color-shift effect with the viewed angle, the reflective spectra will change depending on the dierent angle, the dramatic color effect is showed