A transition from one mixed color to another, the target color locus (Z) in a color system such as e.g. the standard chromaticity diagram (CT), is effected along a stored path (pi) from a succession of color loci which avoids undesired color mixing regions. A change between target color loci (Z) is effected...http://www.google.ca/patents/US8007125?utm_source=gb-gplus-sharePatent US8007125 - Method for changeover between mixed light colors
