Print 4 parts in one color and glue a large model together. In this case you won't have a background, but you will get a model with lots of small parts. I recommend to glue the parts of the model with cyanoacrylate glue. Gluing is best done on glass. So that later you can use a spatula to separate the model from the glass in those places where the glue leaks. For wall mounting, use a nail or self-tapping screw and glue a bracket to the back surface.

You can also print a light box with this image at https://makerworld.com/en/models/406449.