Good to hear that it worked for you! I don’t have any “fancy” light bulb so I can try to add some support for temperature / color (like the hue) but I might need some help from you :).
Do you have access to a Linux machine? I’d be curious to know the kind of data that you get when you query the state of one of these downlights… For a simple dimmable bulb you get something like this: https://pastebin.com/rX02ybwP my guess is that in your case you’ll have a “color_temperature” entry in the “capabilities” list and in the desired_state/last_reading ones.
I can share the instruction on how to get this data, note that by default it contain some personal information (e.g. your address, lat/lon) and some other things that you don’t want to share (your PubNub subscribe key etc), but the last_reading, desired_state and capabilities list don’t contain any sensitive data.