mrtom414 on "Can't change my background"

I am sure this question comes up a ton, but I can't for the life of me figure out how to change my background. Here is the sample page: http://gayanagphotography.com/?page_id=1256

I would like the grey part to be black as well. I am using the Claydell Media theme and this is a 'page' not a 'post', which doesn't have an option anywhere that says to change the background. I even tried looking to my css.style and can't figure out where it is defined. Can someone please help me?

http://gayanagphotography.com/wp-content/themes/claydell-media/style.css?ver=4.5.2

You might want to check customizer to see if there an option to change it.
If not the CSS rule to change it is

.odd { background-color: #000;
}