For a while now, I’ve been frustrated that I can’t assign background colors to color sections. Simply put, they didn’t work. I could give them background images, they worked fine, but solid colors didn’t work. I finally troubleshot the situation and very quickly figured out what the problem was: If you set a “Custom Background Image” in the Main Content tab of the General Styling section of the Enfold Customization interface, that background image overrides and covers up whatever background colors you assign to specific color sections.
At least mine was. It was quite frustrating! Suggest you look into and fix that.