Colour Projection

A permutation of colour 'therapy' in which light is passed through sheets or slabs of gelatin of various colors onto the patient; according to its proponents, each color has a particular effect—e.g., red filtered light increases haemoglobin, blue light decreases fevers, etc.
References in periodicals archive ?
Accurate colour projection is critical to ensure these messages are clear and concise.
SYDNEY, May 25, 2012 /PRNewswire/ -- Vivid Sydney (25 May - 11 June), now in its fourth year, was officially opened tonight with 'Lighting the Sails' of Sydney's iconic Opera House, unveiling a celebration of 3D colour projections and digital artistry by multi-award winning German design team, URBANSCREEN.