A:AnswerThese lights dont change colors, only white, however, they are still pretty nice to dim or brighten with alexa device or app, we have a few of them, it wont change the dimmness once you have it set to one brightness unless you say so
A:AnswerThis bulb connects to your wi fi without any controller.
I use it with amazon Alexa. You just set it up on the app you download on your phone from your app store.
A:AnswerNo, the bulb must be connected to an electrical system to work. The wifi system just lets you turn it on/off, change brightness, and change color.