«The Chroma Effect». Chroma Key Tutorial. BorisFX. Arxivat de l'original el 2005-03-15. [Consulta: 11 gener 2010]. «If the foreground is a person then blue or green backing colour is recommended as these colours are not present in human flesh pigments. In fact, human skin colour is 70% red for all people regardless of race.»
«The Chroma Effect». Chroma Key Tutorial. BorisFX. Arxivat de l'original el 2005-03-15. [Consulta: 11 gener 2010]. «If the foreground is a person then blue or green backing colour is recommended as these colours are not present in human flesh pigments. In fact, human skin colour is 70% red for all people regardless of race.»