All our themes share standardized interface to change some basic settings like logo, colors or font style. For example, to change your logo in customizer go to Appearence > Customize > Logo section. See the image below. Most of our products come with three options to change logo for Dekstop and Mobile devices as well as in the Footer section of your website. You can also adjust logo size from this section.
The similar approach can be used to adjust theme color schemes. Go to Appearence > Customize > Colors section to see what options are there.
There are more than 800 Google fonts that can be applied to most of our themes. Once the new font is selected it is downloaded from google CDN. Only selected fonts are downloaded. This ensures fast download times of website pages. In order to change the font go to Appearence > Customize > Fonts section from your WordPress admin panel. See the image below for a reference.