Just edited the post to change that. StreamGestureManager is not a thing. It got copied over.

Did you find any solution to this? Facing same hurdles

Same here, developing a tvOS app. When using the mediaPlayer.play() method, it would display a black screen, it won't play the video that I'm providing, and it would log that "screen params are unexpected" error. Not sure how to go about this. I haven't find any solution yet, neither have been able to resolve it by myself

<stackTemplate theme="dark" class="background"> this would do it: There's a theme property that a template element can take. This theme defaults to "light", and by change it's value to "dark" it would make the text color lighter. Combining this with setting the background-color style property of the template element would do the trick. To get you a light text and a background color of your choice.