Go to Appearance >> Customize >> Theme Style Settings
Here the settings have given related to theme skin color. Set the color of the theme of your choice from here. And select the theme layout: boxed or wide. Also, set the light or dark variation.
- Predefined Colors: Here are 6 predefined colors, you can choose one of them for your theme.
- Enable custom color skin: You can choose custom color also of your choice from Skin color by enabling this option.
- Theme Skin: Select the variation of the theme from here Light or Dark.
- Theme Layout: Select the layout for the theme, either you want to show the site in a wide layout or boxed layout.
- If you choose the boxed layout, then here are some predefined background images from where you can select any one of these images.
- You can also select the custom background image or color from the Colors & Background Settings.