ColourVUE 3 Tones (2 lenses) - dioptric. ColourVUE 3 Tones is a popular range of coloured opaque hydrogel contact lenses that give a natural look. Made from newly developed skin-like material that prevents corneal damage, and with excellent oxygen permeability, these sight-correcting lenses are remarkably comfortable. ColourVUE 3 Tones are suitable for a daily use and should be replaced every three months.