1. Changing the titles
1.1 Open the settings panel by clicking on the top-right corner on your title modules.
1.2 Pick up your color on the color selector for the field “Font color”
2. Changing the links and navigation menus
2.1 Open the page settings panel, click on the “CSS” tab > “Global styles” and using your browser’s searching tool, search for the color to be replaced, i.e: for Core it will be #bb9d56. After doing that, please replace all your matches with your prefered color.
Following this guide you should be able to change the primary color on your theme.