How to change color of widget sections on homepage

Hello! How can I change the background color of the widget sections on my homepage? I tried Appearance > Customize > Advanced Color Options, but haven’t been able to figure out how to chance the following elements: #business-point-cta-1.bg_enabled.business_point_widget_call_to_action::before , #pt-theme-addon-portfolio-1.widget pt_theme_addon_widget_portfolio , #business-point-fun-facts-3.widget business_point_widget_fun_facts. Thanks in advance for any help!