Light ring of the homebutton

Hi there, today my mx4 with flyme 5.1.3.0A arrived, which I bought second hand. I wonder if it is possible to change the settings of the light ring around the home button, that acts to my understanding as a notification led. I have not found a possibility for change the behaviour of this light ring. For example, is it possible to let the light ring glow when the screen is off?
Thanks!

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