Read the user manual for the bulb. It will tell you the bulbs are intended to be on power all the time. That’s true of all the different brands.
As far as switches, there are a number of battery operated switches available now which can work well with smart bulbs. That solves the problem of having a switch on the wall that doesn’t cut the power to the bulb. There even two different designs which fit right over the existing switch, no wiring required, so that guests and kids have a switch right where they expect going to be. But again, your choice.