If you want to change the style of your website in the Site Builder you can follow the following steps.
1: Log on to your Site Builder
2: Click on the Pages and Styles button, you can find this option on the top of your page.
3: Now click on the three vertical dots after the name of your website.
4: Now choose for option Site styles
5: You will now see an overview of options to change the style of your website. You can set a different background style like Gradient, Solid Colour or Image.
6: If you have chosen for Solid Colour then you will see different Content Styles which you can change.
7: For example, if you want to change the colour of your Heading 2 Text Colour you can click on square behind the text
8: Choose the colour what you want and click on the square
9: When you’re done you can click on the button publish to set the content online