Documentation about design customize optionsBrowser Info Environment
It would be very create if you can extend your documentation with sample screenshots about what section/part of the theme is behind the option name in the design/theme/customize options. Not all names are selfexplaining and some of them you need to have the right content first in your website before you can understand what is it.
So, please add screenshots with releated useful example content (extrem colors to easy identify the related part). This would save time for frontend development a lot.