Method to Modify Errors Background Color in WpForms
https://wordpress.org/plugins/styler-...
Download and install the above free plugin to change the overall look of your WpForms. This plugin makes use of Wp customizer because of which you get true WYSIWYG . Styler for WpForms consists almost 100 settings to alter the look without any CSS coding. It adds the ability to modify margin, border color etc using the default controls.