A:AnswerThey are LED lights. I don't know if that is the reason or that it's Phillips' flair. Regardless, they work great!
I am certain you could adjust your bulb wire to fit this bulb
A:AnswerThese only have one color and it is a warm white. You will need to get the White Hue lights with "ambiance" to be able to change the color of white.
A:AnswerYes, you can assign lights to specific rooms within the hue app. I use the Google Assistant and have Google home's in each room. If I want to turn off a light in a room, I tell it to turn off the lights in said room, if I want to turn them all off, I say turn off all the lights.