How to make everything in a word document black?

As for words, you'd double click on all your words to highlight them, and then you go to the font color at the top and click black.
As for filling in the background I'm not sure you can for completely black unless you took a picture and just covered the page with it and used a white text box. Otherwise, I'm sure it'd be in the insert box! I hope this helps! Good luck, rockstar. (:

Iwould like a photo instead of all this and you can’t just go out asking for a paragraph thinking someone will be like oh yeah here it is