Materials, substances and compositions for forming patterned concrete; colouring substances and compositions for colouring cementitous material such as concrete, grout, mortar; release agents for use in forming patterned concrete including releasing agents incorporating colourants; sealing agents including sealing agents for patterned concrete; colour hardening for cured or partially cured cementitous material; clear or coloured sealers for addition to cured cementitous materials; coatings including paints, pigments and sealants for concrete surfaces; powder form for paints and all other goods included in the class