Under Colors and Styling section you can change primary and secondary website colors, Change background color and any general styling.

1. Accent Color – You can change all primary theme colors
2. Secondary Color – You can change website secondary colors
3. Dark Mode – If you want to turn your site to dark mode enable this option
4. Styling – Only general styling options for body, buttons, images, etc.
5. Widgets – Full styling options for sidebars and widgets

• Theme Colors – If your theme color is for e.g. red and you want to change it to green, it will replace all old red colors in your database with new color you selected.
  
  
• Dark Mode – It will affect only on 70% of website and you need to change some other parts that have custom styles manually.
  
  
• Boxed StyleKit – If you want to change boxed background, first enable it from
  Theme Options > General > Layout

Go to Theme Options > General > Color & Styles you can find Body and Boxed StyleKits.

• Boxed Mode  – You can enable boxed mode from Theme Options > General > Layout
  
  
• Individual Page Background – Edit your page in backend and from page settings you can find Body StyleKit and change background color.