By default, your top navigation bar's background color will be white. For aesthetic preferences or to better contrast your logo's colors, you may want to change this. To change the background color of your top navigation from white to your website's primary color:
- Go to Site settings.
- Check the box saying Use the dark Facebook like button.*
IMPORTANT: This will also change the background color of you footer from white to your website's primary color, as your logo appears down there as well.
*NOTE: Contrary to what the checkbox's name implies, this will have no effect on anything Facebook-related on your site.