Hey Shelly,
There should be three different ways to change the background color in the Custom Facebook Feed display.
1. Go to your WordPress Dashboard – Facebook Feed – Customize (tabbed page) – in the setting “Feed Background Color” under the “General section on the page enter the setting: #f8f8f8
2. In your shortcode for the feed on the page you can enter:
[custom-facebook-feed bgcolor=f8f8f8]
3. Go to your WordPress Dashboard – Facebook Feed – Customize (tabbed page) – in the setting “Feed Background Color” under the “General section on the page click on the “Select Color” button and then click on the clear button.
Next go to the Misc (tabbed page) – scroll down to the Custom CSS section and add this to the custom css box. #cff {background-color: #f8f8f8;}
Any one of these methods should result in the changing of the color of the feed’s background. Let me know if you have any further problem. I hope your weekend is going great.