Step 1: From the dashboard, go to the Content drop down and click on Web Campaign. Scroll down to Navigation Settings.
Step 2: Choose your Navigation Layout.
Note: If you've chosen the 'Inline' layout, choose the Navigation Side.
Step 3: Edit your colors (use HEX number codes, typically beginning with #) for the navigation layout you've chosen.
Step 4: Save the settings.
Step 5: Refresh your microsite to see the changes.