As mentioned above, the answer is "yes," but they really don't need to be Zigbee. Hubitat is a hub that can boss your lights around based on any sort of input: apps/automations, Dashboard, voice, and other devices, including switches/remotes/buttons--even if the "switch" (button/remote) is a different protocol, as long as Hubitat understands it. The RGBGenie you mentioned is one option, but a Hue Dimmer, Eria Remote, or Lutron Pico (Smart Bridge Pro required; this will be expensive for just one, but if you get a lot, Picos are cheap enough it may balance out) are a few of many others.
You can even use an in-wall switch with the relay/dimmer disabled if the device supports that but still sends event for button pushes. Scene switches like the new Inovelli LZW30-SN are a good choice, and most recent Zooz switches/dimmers will let you do the same. The bulbs are saying they can't be dimmed with a "regular" wall dimmer. It's also not a good idea to turn them off with a regular switch (you can't turn them back on via automation anymore). These switches overcome that limitation by disabling local control (so pressing the paddle doesn't really cut/restore power) while still sending button events to Hubitat. You could then set up an automation that turns the smart bulbs on when the top paddle is pushed and off when the bottom paddle is pushed, among other things (the scene-capable models support mulit-taps, so you can do, say, two taps up to change colors, or press and hold to brighten/dim).
