Currently you are only able to select the color of the light, or a flow once the light has been turned on.
This can be inconvenient and should be an easy fix.
For example: when you want to turn on the light with the nightlight scene, but you turned it off with full brightness, you have to turn it on first (poor fully dilated eyes) and only then are you able to select the scene.
The selector should be available when the light is off as well.
It is possible to turn on a light with a selected effect, using the
set_power method (I used the former in my app, as it can do anything).