Option to use plain wallpaper on Roku TVs

Why are the theme packs and wallpapers so horrible on Roku tvs? Seriously? I can’t even add a simple red background. I don’t need some gay pride or African history trash wallpaper. I didn’t purchase a Roku tv just to have your political agenda shoved in my face. Give me the option to use a plain wallpaper theme that allows me to customize the color.