Elgato Keylight don't provide the brightness as supported_color_mode


I’m the creator and maintainer of the Home Assistant integration in Raycast. I’ve got a new Elgato Keylight and I was wondering why the HA integration don’t send brightness as support_color_mode. The mode only report color_temp. My integration use the brightness mode to activate or deactivate the brightness feature. Lovelace display it correctly.

Is that intended or is that a bug? Philipps Hue lamps provide the brightness mode in supported_color_modes.

What is a solid way to detect the brightness feature? Could I assume that when color_temp mode is there the it will automatically can do brightness control?

Thanks in advance