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From Introduction: Creative images which are normally called 'art' can be distinguished as either 'plastic' or visual. Both these forms throughout the history of art have relied to a greater or lesser degree on the use of colour. It is my intention to investigate specifically the changing role which colour has played in sculpture - the 'plastic' media of the visual arts and to chart the technical and aesthetic reasons for the use of colour. This investigation will encompass the historical perspective, the material qualities, aesthetic considerations, transitional codes and methods of approach in sociological frameworks and the examination of colour as a metaphysical element in the presentation of three dimensional media.