What happens is the lights come on at 15% briefly then go to 0% and then fades up from zero.
I tried setting the dim level in the Color temp command and the results are the same.
I am not sure if this is a bug or simply the way fade works. If fade does not work this way than I can stop bashing my head trying to get it working
Try the Gentle Wake Up app by BPTWorld. I think it will do what you want, you can set the minimum starting brightness and maximum brightness ending points over a certain amount of time.
From the instructions on the app:
When this App is installed, it will create a controller device which you can use in other Apps for even more customizable automation!
The controller acts like a switch so any App that can control a switch can control Gentle Wake Up, too!
So I think you could control this virtual switch with RM. I haven't tried, but it sounds like it will work.