Yes you could do that. There are also battery powered switches that install over the dumb light switch and can be set to control your smart bulbs; the osram lightify switch is one of those. It kinda depends what you prefer, I don’t think one is clearly better than the other for all people.
Is there a particular reason you decided to go with smart bulbs instead of smart switches (connected to the load wires, I mean)?
I wired my under cabinet lights with RGBWW but still used a smart switch to turn them on/off. Luckily, my LED Controller, remembers it’s last state before loosing power. Works great! When I want to change the color, I use the app even though I recently saw someone made a DTH and a bridge of sorts to work with ST.
There are several different options. They’re covered in the following FAQ:
At our house we put a childproof lock on the existing switches to remind people not to use them but so they are still available in an emergency. In some places we add a battery powered switch. We also use echo for voice control, which everybody likes, and has become our primary method of controlling the lights.
From my standpoint, I installed Zwave switches in combination with the Philips Hue lights.
Not perfect but I handle it with scenes and it does the job well. I created some virtual buttons that are associated with Hue Scenes and use the Smart Lighting app to ensure switches are kept on most of the time (to try and preserve the life of the hue lights).
Like many electronic devices, some smart bulbs occasionally stop working and need to be turned off and on again to reboot. It’s nice to have an easy way to do that. This also means that if for some reason you change out the smart bulbs (e.g. when you move) it’s easy.
I have considered, and still m considering, a cheap android tablet in every room that has a smart bulb. Cheap tablets and phones can be had for $25. Use Velcro or something to have it cover a flat rocker switch. It controls the lights at all times unless the network is down while AC power is up (rare in my area unless you have solar power) - at which point you’d take the tablet off the wall, uncovering the hardwired rocker switch.
That particular model is good for people who don’t want to do wiring, but is not good for people who have smart bulbs on the Circuit controlled by the switch, because it’s a mechanical actuator that just turns off the existing switch. This then exposes the radio in the smart bulb to inrush current whenever the switch is turned on again. So it’s the exact same problem as having just a dumb switch there.
It’s a good choice if you want to use dumb bulbs and need a no wiring solution, though.