GOLDEN Interference Acrylic Colours offer a unique “flip” when viewed from different angles. Colours flip between a bright opalescent colour and its complement. Over white or lighter surfaces, the colour is more subtle and the “flip” effect is more obvious. Over black or darker surfaces the colour is more obvious and the “flip” effect is less dramatic. Adding a very small amount of black to Interference Colours produces deeper opalescent effects. Combine with GOLDEN Gels (Gloss) and Fluid Acrylic Colours to create an endless variety of colours and effects.