RGB light effect that counts the brightness

I am using a led stripe that requires 3 outputs:one for each colour. I am trying to make some automations that are pulsing a specific color based on the air quality, once every few seconds. During the night I need the maximum brightness to be at minimum.

I notice you can customize light effects but I don’t seem yo find any other way to use them but manually, by selecting the effect through the light button.

It appears in the automations you can’t use anything else but the default ones. Is there any way I can achieve this in automstions?