How to change color of page and post background

All of the above may be achieved with CSS:

To discover what CSS is output by your theme, use a web inspection tool such as Firebug: https://getfirebug.com/ , Chrome Inspect Element: https://developers.google.com/chrome-developer-tools/ or Internet Explorer 9+ F12 Dev. Tools: https://msdn.microsoft.com/en-us/library/dd565627(v=vs.85).aspx#csstool

There are others.

When editing CSS, use a Child Theme
https://codex.www.ads-software.com/Child_Themes
Custom CSS Plugin, or Theme provided custom CSS option.
Edits to parent themes are lost on theme update.

Learn CSS: https://www.w3schools.com/css/

I have a basic understanding of CSS and I have tried using the “inspect element” function on my Mac. I have tried looking through the CSS for the divs indicated in the inspect element mode, and none of them have a hex color where I can change it.

Also, I tried creating a child theme but when I did, it messed up my site. I figured I just wouldn’t be able to update my theme. Is there a way for me to make a child theme or another theme based of the current one I have now, that is altered, so I don’t lose my changes if I update?

Actually I found the culprit and have resolved my issue! thanks for your help.