How to configure (change color, font....) of current active theme

Access to Admin Dashboard --> Site Manager --> Theme Manager --> Theme Settings

#1: Enable/ Disable Theme. If this option is enable, the custom settings will apply to current active theme

#2: Click on Reset Settings --> Back to default setting of current active theme. System will ingore all of changes made so far. 

#3: User select color --> Page Background color will be changed

#4: User can select color or upload photo.

      - If user uploads photo, header background will be this photo.

     - If user click on Reset, header background will reset to default

#5: User can select color. If user selects color, this color will displayed on site

#6: If "Apply to Landing Page" is checked, theme will apply to landing page

#7: User can select color. If user selects color, this color will displayed on mobile 

Save settings and enjoy

Hope it helps.