Wall-Mounted 120V Button Controller for Smartthings?

Regarding switches to use with Hue bulbs, this is a very good question, and a very frequently asked one. We even have two community FAQs on it. Start with the short FAQ (the topic title is a clickable link). Then if you want more details on things like tying off the line, look at the long FAQ. :sunglasses::level_slider::bulb:

Long FAQ