Idvac Ltd., Manchester, UK, has developed a metallised colour shift effect without the use of embossing. The process exhibit an aesthetically appealing colour shift effect from red to green depending on the angle of viewing. This process is more cost effective than the one in which soft or hard embossings are used. The metallisation process is carried out at fast line speed and can be done inside a standard vacuum web metalliser without the need of any additional parts or modification. This effect can be combined with holographic embossing image to add extra security element to a hologram. It can also be used for decorative packaging to add visual appeal to packed products. The colour shift effect can also be printed on films to produce texts, logos and patterns with red to green colour switch.