I would like to change the main article area background from White to something else. I am not seeing this option in template settings. Could you please direct me to the right place?

Hi

You can set the body background via the template setting

Its in the theme tab > Background

Cheers
Paul

That's the main page background. I'm referring to the background directly behind the mainbody text.

.zen-spotlight {
background:

Right so try targeting

.mainwrap.zen-spotlight {background: #yourcolour;}

Cheers
Paul

I guess I'm lost on how to do that. When I go to edit CSS files like I do other templates nothing comes up. I made the assumption since the template was using LESS that if I manually edited CSS that it would break something. What file am I looking for to make this change properly?

Hi

you can customise this template in a few different ways - please take a look here

docs.joomlabamboo.com/zen-grid-framework-4/theme/customisation

Cheers
Paul