How can I change the font color of DWQA design at the questions list page?

At the moment, if you want to change the design of the plugin, you can create the dwqa-templates/styles/custom-style folder in your theme folder and copy/paste the template files from the wp-content/plugins/dw-question-answer-pro/templates/styles/default folder into the dwqa-templates/styles/custom-style folder to custom and create the style.css file to change the CSS.