Cast startup logo dark mode

Is there a way to change the startup splash screen to a black background when using Home-Assistant Cast? I am talking about the white background with the home assistant icon, heart, and nuba casa logos on starting up a cast (Logo). The reason I ask is I’m using the cast function to a 50" TV behind a mirror in the bedroom and would like it to come on as I wake up in the morning, but I don’t really want the bright white background to flash up there in a complete dark room. Once the cast gets to loading the dashboard it uses the dark mode theme however.

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Hi. How’s it going? Have you found a way to make the background dark? I have a tablet hanging on the wall. And the white background also creates discomfort