I noticed a couple of issues with `Media.PlayerColors` on the Fenix 6.
The main one is that the `textColor` attribute doesn't seem to work: regardless of configuration, the system text on the player is drawn using BLACK. This means that if you select BLACK as the `backgroundColor`, the text will be invisible no matter what foreground `textColor` is selected.
The other oddity is that the background on the right-side Play button is controlled by `progressBarBackgroundColor`. However, the background on the left-side elipsis and hotkey buttons is fixed at gray: it's not configurable. The lack of symmetry or configurability is a bit odd and means you can really control the look too precisely.
Another issue is that hotkey icon on the primary screen is fixed as black. At first I thought this would be difficult to fix if it was a bitmap, but then I realized that the corresponding icon on the secondary screen is using `hightlightFillColor`, so it should be colorable. (Why `highlightFillColor` for those icons? I'm not sure, that name doesn't seem to match what they're doing)
