Within the Colors menu, you can set all of your options for your site's colors, including your site color, background color, and font colors. You can also set your color choices for icons, arrows, info panels, and thumbnails.
The Site Color is the canvas color for your site - it fills the entire browser window behind your navigation menu and site content.
To set your Site Color:
Click on the Color Picker and select a color for your site’s background by selecting a color swatch, choosing from a color field and spectrum, or entering the RGB color values. You can also enter a hexadecimal color value (ie #999999). Your selected color appears in the small Color Picker preview pane.