I've been struggling to find any helpful use for Siri Shortcuts, but I finally... finally found one! I don't know why shortcuts works and HomeKit doesn't, but at this moment Shortucts allows us to use Siri voice commands to activate a Hue lighting scene that has been edited to include transition times (fade in and out or dim). I wrote up a quick note on how to do this here http://techheroesinc.blogspot.com/2018/11/finally-siri-supports-transition-times.html
This is actually a big deal for me since I have many Hue scenes that I want to fade in or out to be easier on the eyes and set a mood.
This is actually a big deal for me since I have many Hue scenes that I want to fade in or out to be easier on the eyes and set a mood.