A lighting fixture having a color-changing mechanism, such as a color wheel, for cycling through a plurality of colors, such as by rotating, at a first speed and a second speed. The second speed is faster than the first speed. A position pulse device, such as a position sensor, generates a reference...http://www.google.com.au/patents/US7497595?utm_source=gb-gplus-sharePatent US7497595 - Lighting fixture having two-speed color-changing mechanism
