What I’d like: a “dark mode” for the lower part (Title, Artist, time, logo inverted). Still it’s pretty cool for “presentations”. 
Well, the post I was refering to was moved out to Trouble using Display with Nvidia Shield device so the remark is a bit out of context now.
@Simon_Arnold3 Funnily for me it only works with nvidia shieldTV, not with browsers (Safari on macos, Chrome on an Android tablet).