1, In order to use feature image for a page title layout, please select the settings at bottom of the page editor as below:
List of Page Title Layout that supports header images : Center Background, Center Background Large, Center Parallax, Center Parallax Large, Left Background, Left Background Large, Left Parallax, Left Parallax Large
Page Title Background Image Type: Featured Image
2, To change the background color of call to action element, you can use the settings in Row setting > Design Options as the screenshot below:
Or you can also use Row background color preset option to change background color of elements.
If the problems still persists, please send us a screenshot about the issue and your site URL + admin account via private reply so I can have a look at it.