(Getting all carried away and swearing. Is a reflection of character. Chill out. Its a TV not somebody's life)
The photos will be there for a reason, someone mentioned it before, they'll probably be there to utilise the screen and colours to reduce screen burn when the TV is on but not used.
I came here today looking for an answer to the same question. Even if we cannot customise the wallpapers. If we had categories to choose from it would help to randomise