In the theme editor tab you can choose between a basic white header theme or a custom colored header with different styles.
With the basic header, you can change the color of the header's bottom border and the color of the link in your landing page.
You have the option of customizing the header more in this section, such as changing the background color or using a custom image.
With the custom header, you can select from four types of styles including a custom image as well as the background color.
Your normal logo might not look as good in a colored header, so you can use a white logo and enable it here.
Here you'll be able to change the color of the links in the landing page.