custom background in mobile version firefox too

[Bane141]

Please add custom background Soni can put my fav wallpaper as background and most importantly the group I see is in beta version for mobile but I switch tabs is very not smooth experience I have to exit Outta tab and then enter the tab by pressing it if possible make it so there's a toggle of tabs below so I can just tap and switch tabs in group tabs 

Thankyou