Tutorial
The color of the department headline can be customized for sites using the Legacy theme. Sites that are using a theme will use the color scheme set in the theme's settings.

The department headline color can be managed under Appearance Font Settings
Department Headline Font Color
The department headline color can be edit under the 'Department Headline' section.
Enter a hexadecimal color code if known or click in the box to open the color picker. Choose a color from the color picker box.
Push the Changes through to the Site
The changes can be seen throughout the site by applying changes to 'Edit Site Descriptions.'
Edit Site Descriptions can be managed on the right side of the control panel under Master Settings Edit Site Descriptions
Save
Click on the button