I already have that selection in my Title Section(Alternate) section (see capture). It is set to transparent but defaulting to white. I have the breadcrumb/title area turned off on all pages I will create a new page that leaves this on to show you what I mean. I am using the Alternate Background for Row Settings in Visual Composer (see capture2).
test page with the title bar (https://usenergytour.com/past-events/test-page/)
For the test page Title Bar is set to Transparent for Background color and alternate background color. But it still shows up as white. I have also added custom CSS to the class alternate-color, (see capture3). If I change the color of the title bar to say blue, the color does change.
I had this working with the main style, the background elements that I wanted to be transparent were and I was able to get the effect that I wanted. I had to switch this around when I realized the Blog portion of the site was showing up with all transparent backgrounds.