How to get rid of apple tv + app subtitle background ?

Hi guys,

It seems a bit lame that apple tv + app on my samsung tv set lacks a setting control to disable the subtitle back ground, you know that black rectangle that spoils the quality of the content by covering the area like a piece of membrane or film.

I failed to find any relevant field to get rid of this like adjusting the opacity to zero percent like in youtube.

Does anyone know where I could get rid of this pesky subtitle background looks ?

Thanks