Dear Firefox Team, Look at the attached image below. The background 'black' really looks basic. Theme which I have set is great but look at that black background. It should also get changed as per the theme color or atleast provide us an option to set a new wallpaper instead. That black Firefox background doesnt look good. For example, look at Microsoft Edge default tab background. It shows an image or theme colors which we have set. Opera gives us an option to set background image as wallpaper or it will change as per the theme set. Same thing expecting in Firefox also. I have searched for an option to set a new wallpaper in background but there was no such option. I would request you that in your coming updates, kindly add an option to set a new wallpaper atleast of our choice. It would look great and more appealing. Thank you.