If is background image choosed by user, it should by used by locker as background image instead of theme's default background. Reproducible: Always
It was my first reaction to the new locker too. But what if the user has several virtual desktops with different wallpapers? I guess it would be better to let the user define a background for the locker (wallpaper, color). -> Bug 312828: simple locker should allow for custom background
Well, to be honest, I have not thought about situation like this. But I totally agree. *** This bug has been marked as a duplicate of bug 312828 ***