Blogs: Change background color of blog post

Example:

Code:

/* -- code to change blog post background color -- */
.blog__article--over-image { background-color: #f1f1f1; }
/* - end - */

You can change the value of #f1f1f1 to any valid hex color code:

http://www.colorhexa.com/web-safe-colors

Example code for black background:

/* -- code to change blog post background color -- */
.blog__article--over-image { background-color: #000000; }
/* - end - */

Where do I add the code?

Use this link to learn where exactly to add this code snippet:

Where to add your CSS style code