A homeowner wants to use smart bulbs and convert a switched lighting circuit w/ permanent fixtures to always powered. They also want to replace the existing switch with a smart switch. The smart switch will send commands to the smart bulbs to turn them on and off but will not actually function as a power interrupter. Is there any requirement to have the ability to interrupt the power to the fixtures? Is there a problem with the fact that the switch turns off the bulb and arguably could lead someone to believe the circuit is unpowered? If the switch has an LED indicator which is on when the bulb is off to indicate the circuit is still powered does that alleviate the previous concern, or is the switch required to also have an air gap feature that will interrupt power to the fixture when activated.