Read through the rules and I did find an old thread sharing wallpaper images so here is my attempt to clean up the homepage of MOL2.
Anyone looking for a simple image to make the home screen background less bright / simple like MOL3. Here is a black/white gradient file. Easiest way to upload is use whatever storage device you've connected for DVR/Timeshift capabilities. Make a folder called "wallpapers" put the jpeg on there. Then in Launcher settings go to advanced>wallpapers>apps>local
Choose the storage device and find the file.