Patent ID: 8013538

Claim:
A lighting arrangement comprising: a light fixture including a plurality of light sources wherein each light source is configured to generate a different color light when energized; and a circuit arrangement included in the light fixture and operatively interposed between the plurality of light sources and a source of electrical power, the circuit arrangement being responsive to interruptions in the supply of electrical power of less than a predetermined period to simultaneously de-energize all of the light sources for a full duration of the interruption and to subsequently toggle energization from one light source to the next and thereby produce different color light in response to each interruption cessation; and wherein the circuit arrangement comprises a microcontroller and a temporary power source which is configured to energize and maintain the microcontroller in an operational state for a period equal to the predetermined period and which allows the microcontroller to power down and reset to a default in response to a duration of the interruption being in excess of the predetermined period.