By a stroke of luck or perhaps sheer persistence I figured it out. Working entirely through the InMotion AMP interface (although you could also use an FTP client and some other editor) go to cPanel > File Manger > Public_HTML/wp-content/themes/boldgrid-wedge/css/color-palettes.css > Right-Click > Code Edit, and search for “.palette-primary .call-to-action-wrapper {background-color: rgba(255, 255, 255, 0.8)” It’s just a couple lines up from the bottom. Change the “0.8” to just “0” and save it. That’s it. I immediately refreshed on my tablets and phone sand the background is gone.