Using Shopify's Theme Editor
Once you've installed the theme you can configure it in Shopify's theme editor by clicking Customize.
The Sections tab contains the building blocks of your store. All sections contain unique settings and content blocks that can be configured to create layouts.
The Theme Settings tab contains universal settings for design elements like typography and colors.
Changing theme style
Themes come bundled with styles or presets which have pre-configured settings for elements like typography and colors. To change the theme style, go to the theme editor and navigate to the Theme settings tab then click Change theme style.