It won’t play for me, but from the still shot I see that they put the LEDs under the clips. A dot of black enamel paint should put an end to that. I hadn’t seen that before on a motherboard. Usually it is the fans that I’ve disabled LEDs on. Those will show from the outside on nearly any case and I find the lights annoying.
Now my son’s machine we built last year has a windowed case with a huge number of “vents” as well. He ordered fans with Orange LEDs and his machine looks like lava in a volcano.