In General settings, you will get options to change the font, color, font size, etc as below given.
1. Review Body ( font size, color, font ).
2. Button ( font size, color, background color ).
3. Verified type ( text or icon, font size, color, background color ).
4. Review title ( font size, color ).
5. Star ( font size, color ).
6. Customer image ( test color, background color ).
7. Customer name ( font size, color ).
8. Date ( font size, color ).
9. Date format.
Please follow the below instructions:
Go to App admin --> Settings --> Settings --> Layout Settings.
When you scroll down the page you will find General Settings option. Click on Save to save all the changes.