Editing a background into night time!

Would anyone be able to turn these backgrounds into night time? Or even if someone can let me know how to edit them myself? It doesn’t need to be pitch black, just a dark blueish sky and if anyone can make it look like there are lights coming from the windows? (That’s okay if not) just the dark sky will do :slight_smile: TIA

I can do it do you want it to be pitch black?

Cool! Would you be able to do it sort of dark blueish? Similar to this?