Thyme - Social Media Icons
This theme uses the Simple Social Icons Plugin. This plugin automatically installs with the theme.
Navigate to Appearance > Widgets and drag the widget labeled “Simple Social Icons” into a widget area.
The demo displays them in the Primary Sidebar, Nav Social Menu and Footer 2 widget areas.
Configure the widget by choosing the icon size and color, and replace the # by adding the full URLs to your social profiles.
Here is a screenshot of the settings used in the Thyme demo: