Appearance >> Customize >> Additional Settings >> Social Media Icons – Section

From this option, you can change the primary, background and header text color of the website

• Theme Color– This option allow to change website main color.  We recommend you to change this color related to logo color(But if you want to change it different from logo color than free feel to change).
• Header Text Color – This option allow to change Site Title and Tagline color on header branding part.
• Background Color –  This option set background to entire website background.(For Fronted Developer This color for body  tag background)