Methods and apparatus for controlling illumination. In one example, one or more multi-color light sources are controlled based on one or more interruptions of power supplied to the light source(s). In another example, a pool or spa is illuminated by one or more multi-color light sources that may be employed...http://www.google.de/patents/US6967448?utm_source=gb-gplus-sharePatent US6967448 - Methods and apparatus for controlling illumination
